how to cite multiple authors in a speech

Citing Sources: Citing Orally in Speeches

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Citing Orally in Speeches

• Citation Managers
• Oral Source Citations - James Madison University Communication Center
• Using Citations and Avoiding Plagiarism in Oral Presentations - Hamilton College, Dept. of Rhetoric and Communication
• Referencing: Citing in Orals - James Cook University

General Tips:

Tell the audience your source before you use the information (the opposite of in-text citations).

Do not say, “quote, unquote” when you offer a direct quotation. Use brief pauses instead.

Provide enough information about each source so that your audience could, with a little effort, find them. This should include the author(s) name, a brief explanation of their credentials, the title of the work, and publication date.

 “In the 1979 edition of The Elements of Style, renowned grammarians and composition stylists Strunk and White encourage writers to ‘make every word tell.’”

If your source is unknown to your audience, provide enough information about your source for the audience to perceive them as credible. Typically we provide this credentialing of the source by stating the source’s qualifications to discuss the topic.

“Dr. Derek Bok, the President Emeritus of Harvard University and the author of The Politics of Happiness argues that the American government should design policies to enhance the happiness of its citizens.”

Provide a caption citation for all direct quotations and /or relevant images on your PowerPoint slides.

Direct Quotations:

These should be acknowledged in your speech or presentation either as “And I quote…” or “As [the source] put it…”

Include title and author: “According to April Jones, author of Readings on Gender…”

Periodical/Magazine:

Include title and date: “Time, March 28, 2005, explains…” or “The New York Times, June 5, 2006, explained it this way…”

Include journal title, date, and author: “Morgan Smith writes in the Fall 2005 issue of Science…”

For organizational or long-standing website, include title: “The center for Disease Control web site includes information…” For news or magazine websites, include title and date: “CNN.com, on March 28, 2005, states…” (Note: CNN is an exception to the “don’t use the address” rule because the site is known by that name.)

Interviews, lecture notes, or personal communication:

Include name and credentials of source: “Alice Smith, professor of Economics at USM, had this to say about the growth plan…” or “According to junior Speech Communication major, Susan Wallace…”

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Home / Guides / Citation Guides / APA Format / How to cite in APA when there are multiple authors

How to cite in APA when there are multiple authors

This article covers how to cite a reference in APA style (7th ed.) when there are multiple authors. Broadly speaking, in an APA style “the author” refers to the person(s) or group(s) who should be given credit for the work being referenced.

Here’s a run-through of everything this page includes:

In-text citations when there are multiple authors

Reference list entries when there are multiple authors, troubleshooting.

APA 7th ed. uses the author-date citation system for citing references in text. Unless you are citing a source with no author in APA , the structure in parenthetical citations includes placing the author’s last name/surname, followed by a comma, and the publication year in parentheses. In narrative citations, this information is incorporated into the sentence.

Parenthetical citation for one author:

(Author Last Name, Year Published)

(Curtis, 2020)

Narrative citation for one author:

Author Last Name (Year Published)

Curtis (2020)

Two authors

For a work with two authors, include both authors’ last names in every in-text citation, whether narrative or parenthetical. In parenthetical citations, use an ampersand (&) between the authors’ last names.

Parenthetical citation for two authors:

(1st Author & 2nd Author, Year Published)

(Curtis & Williams, 2020)

Narrative citation for two authors:

1st Author & 2nd Author (Year Published)

Curtis & Williams (2020)

Three or more authors

When citing a journal paper in APA with three or more authors, only enter the last name of the first author listed and add “et al.” after it. “Et al.” is Latin for the phrase “and others,” which is why it is used as a substitute for two or more authors’ last names.

Parenthetical citation for three or more authors:

(1st Author et al., Year Published)

(Harris et al., 2020)

Narrative citation for three or more authors:

1st Author et al. (Year Published)

Harris et al. (2020)

Here is a page with more information on when to use “et al.” in APA style .

Group authors

The same guidelines for in-text citations apply when the authors of a source are a distinct group or organization such as a government agency, association, nonprofit organization, business, hospital, task force, or study group. To confirm whether a reference was written by individual author(s) or a group, check the cover or title page.

Hint: for an online resource, the author could be the name of the organization hosting the webpage or website, rather than the name of just one content contributor.

Before using an abbreviated group name as the author of your citation, spell out the abbreviation and define the group one time first in the text. Afterward, use the abbreviation of the group name throughout the rest of the paper.

Group author in-text citation examples:

First parenthetical citation with group abbreviation included: (Association of Jesuit Colleges and Universities [AJCU], 2020)

Subsequent parenthetical citations: (AJCU, 2020)

First narrative citation with group abbreviation included: The Association of Jesuit Colleges and Universities [AJCU] (2020)

Subsequent narrative citations: The AJCU (2020)

Avoiding ambiguity in in-text citations

Sometimes, in-text citations that have three or more authors, some of whom have the same last name, and the same publication year can look like they are the same reference when using the et al. abbreviation. For example, Curtis et al. (2020) could refer to

Curtis, Acres, Thomas, Henderson, and Tyler (2020)

Curtis, Acres, Thomas, Henderson, Maxey, Key, Smith, and Esparza (2020)

To avoid this ambiguity and confusion for the reader, write out as many names as possible for the in-text citation until the references are distinguished, and then add “et. al” to abbreviate the other authors’ names.

Curtis, Acres, Thomas, Henderson, et al. (2020)

Curtis, Acres, Thomas, Henderson, Maxey, et al. (2020)

When only the final author is different, list all of the names in every citation to avoid any confusion.

Curtis, Acres, Thomas, Henderson, and Esparza (2020)

APA has slightly different reference structures for different source types (e.g., book, website, journal article, etc.), but each structure generally includes the following:

Author last name, Author initials. (Date Published). Title. URL or DOI if available .

Need more help with citing a particular source? Find further guidance in this APA citations guide.

One or two authors

For references with one or two authors, cite using the four-part structure.

Two individual authors example:

Smith, J., & Jones, S. (1994). Making a movie star. Behind the Scenes Stories: A Journal of Celebrity Life, 44 (2), 192–200. https://doi.org/l4nds0r

One group author example:

The American Marine Society. (2003). Whale mating patterns in the new millennium. The American Marine Society Magazine , 17-20 . https://fams.gov/article/2003/whale-mating-patterns-in-the-new-millennium

2 – 20 authors

In APA 7th ed., up to 20 authors should be included in a reference list entry. Write out the last name and first initial(s) for each contributor.

2–20 authors example:

Wright, A., Komal, G., Siddharth, D., Boyd, G., Cayson, N., Beverley, K., Travers, K., Begum, A., Redmond, M., Mills, M., Cherry, D., Finley, B., Fox, M., Ferry, F., Almond, B., Howell, E., Gould, T., Berger, B., Bostock, T., Fountain, A. (2020). Styling royalty. London Bridge Press.

21+ authors

For references with more than 20 authors, after listing the 19th author replace any additional author names with an ellipsis ( … ) followed by the final listed author’s last name and first initial(s).

21+ authors example:

Wright, A., Komal, G., Siddharth, D., Boyd, G., Cayson, N., Beverley, K., Travers, K., Begum, A., Redmond, M., Mills, M., Cherry, D., Finley, B., Fox, M., Ferry, F., Almond, B., Howell, E., Gould, T., Berger, B., Bostock, T., . . . Booker, T. (2020). Eating well: Tips from 23 lifestyle authors. Food Magazine. https://foodmag.com/article/2020/tips-from-22-lifestyle-authors

Solution #1: How to order the names of multiple authors in an APA reference

Authors should be cited in the exact order that they are listed by the source, even if they have not been listed alphabetically.

Solution #2: How to cite an article with more than 20 authors in APA style

If an article has more than 20 authors, all authors do not need to be listed in the reference. Instead, name the first 19, then use an ellipsis (…), then add the name of the final author listed. The ellipsis acts as a substitute for all the names between the first 19 and the final authors. No ampersand (&) is needed before the final name.

For example:

Richards, B.A., Lillicrap, T. P., Beaudoin, P., Bengio, Y., Bogacz, R., Christensen, A., Clopath, C.

Costa, R. P., de Berker, A., Ganguli, S., Gillon, C. J., Hafner, D., Kepecs, A., Kriegeskorte,

N., Latham, P., Lindsay, G. W., Miller, K. D., Naud, R., Pack, C. C., … Kording, K. P. (2019). A deep learning framework for neuroscience. Nature Neuroscience ,  22 (11), 1761–1770. https://doi.org/10.1038/s41593-019-0520-2

When making an in-text citation, only write the first author’s last name followed by “et. al.” This applies to both parenthetical and narrative citations.

(Richard et al., 2019)

Richard et al. (2019)

Solution #3: How to cite an article written by an organization in APA style

• Organization as author

When an article is written by an organization, use the typical four-part APA structure (author, date, title, publisher) and cite the organization as the author.

American Nurses Association. (2019). 2018 Annual Report, American Nurse Today, 14 (6), 29-36.

https://www.nursingworld.org/~49d621/globalassets/docs/ana/ana-annual-report-for-

• Organization as author and publisher

If the organization that authored an article is also its publisher , omit the publisher’s name in the citation.

• In-text citation when an organization is an author

Use the organization’s name as the author. For example:

American Nurses Association [ANA] (2019)

If an organization’s name is long, abbreviate it by doing the following:

• First, write the organization’s name in full the first time, followed by the abbreviation in parenthesis.
• After this, you may use the abbreviation without including the complete name.

1 st in-text narrative citation: American Nurses Association [ANA] (2019)

1 st in-text parenthetical citation: (American Nurses Association [ANA] (2019)

After this distinction is made, abbreviations in-text can be used as demonstrated below:

Narrative citations: The ANA (2019)

Parenthetical citations: (ANA, 2019)

Published October 28, 2020.

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To cite a source with multiple authors and an edition number in APA style, you need to know the names of the authors, title of the book, edition number, and publisher. The in-text citation of a book with multiple authors and an edition number is similar to citing a journal or a book reference with multiple authors. An example of a book reference with three authors and an edition number, along with a template, is given below:

In-text citation template and example:

Author Surname et al. (Publication Year)

LeBuffe et al. (2012)

Parenthetical

(Author Surname et al., Publication Year)

(LeBuffe et al., 2012)

Reference list entry template and example:

Author Surname, F. M., Author Surname, F. M., & Author Surname, F. M. (Publication Year). Book title (edition number). Publisher

LeBuffe, P. A., Naglieri, J. A., & Manderth, A. (2012). Devereux early childhood assessment for preschoolers (2nd ed.). Kaplan Early Learning Company.

Use numerals to indicate an edition number. The word “edition” is abbreviated as “ed.” Italicize the book title and follow sentence case for capitalization.

Citing a source that has multiple authors with the same last name and same initials is the same as citing a source with different authors. There is no need to add the initials of the authors in in-text citations as all surnames (although the same) appear in a single source. Examples of a book reference with three authors with the same last name and initials and their templates are given below:

Dunn et al. (2007)

(Dunn et al., 2007)

Author Surname, F. & Author Surname, F. (Publication Year). Book title. Publisher.

Dunn, L. M., Dunn, L. M., & Dunn, L. M. (2007). Peabody picture vocabulary test-IV. American Guidance Service.

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Research Guide: Citations

• APA Verbal/Speech Citations Example
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• ARTICLES - APA Reference List
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• APA Formatted Paper Example
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• MLA Citation Style Overview
• In-Text Citations - MLA
• ARTICLES - MLA Works Cited
• BOOKS - MLA Works Cited
• ONLINE SOURCES - MLA Works Cited
• OTHER SOURCES - MLA Works Cited
• MLA Formatted Paper Example
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• MLA Verbal/Speech Citation Example
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Verbal Citations in Speeches and Presentations

What should you include in a verbal citation, when you give a speech....

(click on image to enlarge)

Why cite sources verbally?

• to c onvince your audience  that you are a  credible  speaker.  Building on the work of others lends authority to your presentation
• to prove that your information comes from solid,  reliable sources that your audience can trust.
• to give credit to others for their ideas, data, images (even on PowerPoint slides), and words to  avoid plagiarism.
• to  leave a path for your audience  so they can locate your sources.

What are tips for effective verbal citations?

When citing books:

• Ineffective : “ Margaret Brownwell writes in her book Dieting Sensibly that fad diets telling you ‘eat all you want’ are dangerous and misguided.” (Although the speaker cites and author and book title, who is Margaret Brownwell?  No information is presented to establish her authority on the topic.)
• Better : “Margaret Brownwell, professor of nutrition at the Univeristy of New Mexico , writes in her book, Dieting Sensibly, that …” (The author’s credentials are clearly described.)

When citing Magazine, Journal, or Newspaper articles

• Ineffective : “An article titled ‘Biofuels Boom’ from the ProQuest database notes that midwestern energy companies are building new factories to convert corn to ethanol.” (Although ProQuest is the database tool used to retrieve the information, the name of the newspaper or journal and publication date should be cited as the source.)
• Better : “An article titled ‘Biofuels Boom’ in a September 2010 issue of Journal of Environment and Development” notes that midwestern energy companies…” (Name and date of the source provides credibility and currency of the information as well as giving the audience better information to track down the source.)

When citing websites

• Ineffective : “According to generationrescue.org, possible recovery from autism includes dietary interventions.” (No indication of the credibility or sponsoring organization or author of the website is given)
• Better : “According to pediatrician Jerry Kartzinel, consultant for generationrescue.org, an organization that provides information about autism treatment options, possibly recovery from autism includes dietary interventions.” (author and purpose of the website is clearly stated.)

Note: some of the above examples are quoted from: Metcalfe, Sheldon. Building a Speech. 7th ed. Boston: Wadsworth, 2010. Google Books. Web. 17 Mar. 2012.

Video: Oral Citations

Source: "Oral Citations" by COMMpadres Media , is licensed under a Standard YouTube License.

Example of a Verbal Citation

Example of a verbal citation from a CMST 238 class at Green River College,  Auburn, WA, February 2019

What to Include in a Verbal Citation

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COMM B1: Informative Speeches: Citing Sources Orally

• Finding Articles
• Finding Websites
• Citing Sources Orally
• Other Helpful LibGuides

What Are Oral Citations?

Oral citations : When you are delivering your speeches, you should plan on telling the audience the source(s) of your information while you are speaking. (from James Madison University Communication Center )

A good speech should be well-researched, and many times you will be using facts, statistics, quotes, or opinions from others throughout. If you do not cite your sources orally, this can be considered plagiarism and is unethical. This applies to direct quotations, paraphrasing, and summarizing. You must orally cite, even if you will be providing a bibliography,  works cited, or reference list to your instructor.  (adapted from Sante Fe College Oral Citation LibGuide )

Why Cite Your Sources During a Speech?

(adapted from College of Southern Nevada's Oral Citation LibGuide )

CREDIBILITY

An oral citation conveys the reliability, validity and currency of your information. Citing your sources orally lets your audience know that you have researched your topic.  The stronger your sources are, the stronger your credibility will be.

Bakersfield College’s Student Academic Integrity Policy defines plagiarism as “ the act of using the ideas or work of another person or persons as if they were one's own, without giving credit to the source.” This policy, along with Bakersfield College’s Student Code of  Conduct, Code #15 , prohibit plagiarism.

Failure to provide an oral citation is considered a form of plagiarism, even if you cite your sources in a written outline, bibliography, works cited page or list of references.

When you are delivering a speech, you must provide an oral citation for any words, information or ideas that are not your own.  

When Do You Cite Sources in a Speech?

(adapted from Gateway Community and Technical College COM 181 LibGuide )

• Oral citations will always be in a narrative style; you mention citation details about the work as part of your presentation.
• Place the citation before the information to give weight and authority to what you're about to say.
• You must cite words or ideas that come from another person or you will be plagiarizing their work!
• When you are providing information that is not commonly known, such as statistics, expert opinions, or study results.
• Whenever you use a direct quotation. 
• If you are unsure if a citation is required, be safe and cite the source.

Citing Sources in a Speech Video

How Do You Cite Sources in a Speech?

The best practice is to provide a full oral citation that would include the author(s) (assuming that is available), the name of the publication, the specific publication date and year, and any other pertinent information.  How you cite your information should highlight the most important aspects of that citation (e.g., we may not know who “Dr. Smith” is, but if Dr. Smith is identified as a lead researcher of race relations at New York University, the citation will take on more credibility).    (adapted from Tips for Oral Citations from Eastern Illinois University )

(adapted from  Gateway Community and Technical College COM 181 LibGuide )

The first mention of a work should include all citation elements; subsequent mentions of that work only require the author as long as source attribution remains clear (i.e. you have not used a different source in intervening narrative).

What are the elements of an oral citation.

• If the source might not be recognized by your listeners, add a comment to help establish its credibility. 
• Include enough detail to help your listener locate the work later.
• Do give the full date in citations that refer to newspaper or magazine articles.
• Particularly important if there are statistics or data that change over time.
• Mention the publication year for books and journals.
• If there is there is no date, as with some websites, state the date that you accessed the material.
• Also indicate the Author's credentials (why they are an authority on the subject).
• If there are two authors, use both names in your citation.
• If there are more than two authors, name the first author and use "and associates" or "and colleagues".
• If the full title is long, use a shortened version that makes sense and still communicates enough information for your listener to locate the work.

How do I orally cite a quotation?

• You should make in clear that you are directly quoting another person rather than paraphrasing or summarizing their work. You can use a signal phrase like "... and I quote" or "As Jonas said..." to introduce the cited material.

Examples of Oral Citations in a Speech

(adapted from Tips for Oral Citations from Eastern Illinois University )

For a magazine article

“According to an article by Ben Elgin in the February 20th, 2006 issue of Business Week, we can expect Google and Yahoo’s supremacy as the search engine giants to be challenged by new U.S. startups.  Elgin reports that  …”

 “As reported in the February 20th, 2006 issue of Business Week, many new companies are getting into the search engine business. This article explains that …”

 “A February 20th, 2006 Business Week article reported that Google and Yahoo will face stiff competition in the search engine business …” 

For a newspaper article

“On February 22nd, 2006, USA Today reported that …”

 “An article about the effects of global warming appeared in the February 22nd edition of USA Today. Todd Smith’s report focused on the alarming rate of …”

“An article on global warming that appeared in the February 22nd issue of USA Today sounded the alarm …”

For a website 

“On January 12. 2019, I visited the “Earthquakes” page of www.ready.gov , the website of the U.S. Department of Homeland Security, U.S. businesses and citizens …”

“According to the Earthquakes page on U.S. Department of Homeland Security’s website, …”

“Helpful information about business continuity planning can be found on the U.S. Department of Homeland Security’s website, located at www.ready.gov …”

“On January 12, 2019, I consulted the website maintained by the U.S. Department of Homeland Security to learn more about what businesses should do to plan for an emergency.  In the section entitled ‘Plan to stay in business,’ several recommendations for maintaining continuity of business operations were offered.  These suggestions included …”

For a journal article

“A study published on December 12, 2004, in the Journal of Applied Social Psychology reported that incidents of workplace aggression have increased …”

“Research conducted by Dr. Bailey and Dr. Cross at Stanford University found that incidents of workplace aggression have increased over the past five years.  Their 2004 study published in the Journal of Applied Social Psychology in December of that year reported that …”

“According to a December, 2004 study published in the Journal of Applied Social Psychology, …”

“A December 2004 study by Bailey and Cross in the Journal of Applied Social Psychology, …”

“In a December, 2004 study published in Journal of Applied Social Psychology, Bailey and Cross reported that …”

“A December 2004 study by Stanford University researchers found that incidents of workplace aggression …”

“Bailey and Cross, experts in workplace aggression, authored a study that shows that incidents of aggression in the workplace are increasing.  Their December 2004 Journal of Applied Social Psychology article reports that …”

“In her 2005 book, Good Health at Any Age, Dr. Gabriella Campos describes how we can maintain our health through healthy eating.  She recommends …”

“Gabriella Campos, an expert in nutrition, describes what is needed to maintain a healthy diet in her 2005 book Good Health at Any Age.  She contends that …”

“In her recent book, Good Health at Any Age, Dr. Gabriella Campos recommends …”

“In Good Health at Any Age, Dr. Gabriella Campos, an expert in nutrition, offers suggestions for …”

For a television program

“On February 21, 2021, our local PBS station aired a program called “The Insurgency.”  In this program …”

“According to “The Insurgency,” a Frontline program aired by PBS on February 21st,2021 ….”

• “Frontline, a PBS program, focused on the Iraq War in the television program entitled “The Insurgency.”  This show aired on February 21, 2021, and focused on the problems confronting …”

For a YouTube video

“The Children and Young People’s Well-being Service, a branch of the UK National Health Service, uploaded Getting a Good Night’s Sleep–Top Tips for Teens to Youtube on January 7, 2021. In the video, they explain that caffeine is a stimulant and we will get better sleep if we avoid it for at least 6 hours before bedtime.”

“Nemours Foundation is non-profit organization established in 1936,dedicated to improving children’s health. In their How to help your teens get enough sleep video, uploaded to Youtube on July 6, 2022 they explain that teens’ body clocks change during puberty and teens naturally fall asleep later at night, which often leads to sleep depravation.”

For a personal interview

“On February 20th I conducted a personal interview with Dr. Desiree Ortez, a psychology professor here at Eastern, to learn more about student responses to peer pressure. Dr. Ortez told me that …”

“I conducted an interview with Dr. Desiree Ortez, a psychology professor at Eastern Illinois University, and learned that peer pressure is a big problem for university students.”

“In an interview, I conducted with Dr. Desiree Ortez, a psychology professor, I learned that …”

“I met with Dr. Desiree Ortez, a psychology professor here at Eastern, to learn more about …   She told me that peer pressure is a major factor contributing to academic failure in college.”

“In a telephone interview I conducted with Dr. Forest Wiley, a gerontology professor at University of Illinois, I learned that the elderly are likely to feel ...”

“I emailed Dr. Forest Wiley, a gerontology professor at the University of Illinois, to get additional information on his research on the aging’s use of the Internet.  He told me  …”

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Referencing: Citing in Orals

• APA 7th This link opens in a new window
• AMA (Vancouver) 11th This link opens in a new window
• Harvard This link opens in a new window
• IEEE This link opens in a new window
• Citing Medicine (Vancouver)
• Citing in text
• Parts of a citation
• Formatting tips
• Citing in Orals
• Avoiding Plagiarism
• Referencing Resources

Citing in Oral Presentations

Other university guides.

Citing in oral presentations is not a hard-and-fast rule. If you find a guide that you like, check with your lecturer to see if they are happy for you to follow their guidelines.

• Oral Citation Guide CSN Libraries
• Verbal Citations in Speeches Spokane Falls Community College

Orally citing a source in a speech

How to do oral citations in speeches

Student to Student: Verbal Citation

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Citations & Avoiding Plagiarism

• Introduction to Citations
• 5 Steps to Create a Citation
• Citation Generators: How to Use & Doublecheck Them
• IEEE This link opens in a new window
• AI/ChatGPT and Citations
• Annotated Bibliographies
• Avoiding Plagiarism
• In-Text Citations
• Verbal Citations in Speeches
• Citation Help Playlist (YouTube) This link opens in a new window
• Links for Citation Generators Workshop

Why use Verbal Citations?

• Adds credibility.
• Shows your work.
• Avoids plagiarism by giving credit to others for their work/ideas.
• Shows timeliness of research and resources.

Creating an Verbal Citation

General guidelines.

Be brief, but p rovide enough information that your audience can track down the source.

Highlight what is most important criteria for that source.

Include who/what and when.

• Author 
• Author's credentials
• Title of Work
• Title of Publication
• Date of work/publication/study

Use an introductory phrase for your verbal citation.

According to Professor Jane Smith at Stanford University.... (abbreviated verbal citation)

When I interviewed college instructor John Doe and observed his English 101 class...

Jason Hammersmith, a journalist with the Dallas Times, describes in his February 13, 2016 article....  (Full verbal citation)

Full vs. abbreviated verbal citations

Full verbal citations  include all the information about the source thereby allowing the source to be easily found.  ex. According to Harvard University professors, Dr. Smith and Dr. Jones research on this topic published in the Summer 2015 issue of the New England Journal of Medicine....

Abbreviated verbal citations  include less information about the source, but still includes the most important aspects of that specific source.  ex. A 2015 study in the New England Journal of Medicine reports that Harvard University professors....

• FILE: Guide to Oral Footnoting (a/k/a verbal citations) This document from Matt McGarrity, a University of Washington communication instructor, provides examples and tips on how to verbally cite information in a speech.

Speaking a Verbal Citation

Verbal citations should come at the beginning of the cited idea or quotation..

It is a easier for a listening audience to understand that what they hear next is coming from that source. 

Introduce the quote (ex "And I quote" or "As Dr. Smith stated"...) PAUSE. Start quotation. PAUSE at the end of the quotation.

Introduce the quote. Say QUOTE. Start quotation. Say END QUOTE. 

Example 1 : Listen to the first few minutes of this video to hear how the speaker incorporates a verbal citation.

2018 NSDA Informative Speech Champion Lily Indie's "Nobody puts Baby in a closet"  has examples of verbal citations. Listen to two verbal citations starting at the 5:30 mark and running until 6:50 mark in this YouTube video.

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Citing Sources in an Oral Presentation

Citing your sources just means telling where you got particular ideas or bits of information that did not originate in your own head. Sometimes this is called giving credit , attributing , or referencing .

When you cite sources in an oral presentation, there are 3 basic parts

• Orally cite sources of what you say
• Adapt a citation format to cite the sources of what is written on your visuals
• Have a full reference list handy for answering questions

Citing Orally

What Makes Citing Orally Special

In an oral presentation, your audience can’t flip back and forth between in-text citations and a reference list, nor can they look for a footnote or an endnote: you need to tell them where the information, idea, or words come from as you say it . Since listening to a live presentation is a linear process (you can’t skim or jump around and hear it out of chronological order), it’s best to introduce the source before you present the information, so your audience members are ready to evaluate the information with the source (and your view of it) in mind when they hear the material from the source. The citation needs to be brief, because it’s hard to digest the citation while evaluating the information, both of which are given within a few seconds’ time.

Technical How-To

• According to Joseph X, a professor of Yada Yada at Blah Blah University,…
• Farooq Y, author of the well-researched 2010 study, Early American Nutrition and Politics , argues that…
• Katherine Z, a journalist writing for the prestigious New York Times , offers this example….
• Give your audience just enough detail to help them understand who provided the idea or information and how credible the source is.
• If your source is original research (e.g. you conducted a survey, interview, experiment, or observation), just simply tell your audience what you did.
• You might choose give your audience a brief (a couple of sentences) overview of how you did your research, much like the “methodology” part of a scientific study or the “literature review” in a scholarly article in the social sciences and humanities. This can work well when you combine original research and published resources, when you work with different fields (e.g. both popular press articles and scholarly articles), or when you rely heavily on one or two sources that you present up front.
• Pause slightly after the introductory phrase, then read the quote expressively so that the quote sounds like a second voice. Pause slightly again after the quote to indicate switching back to your own voice. This is the best method, but not easy to master quickly. The two methods below, while not preferable, are also acceptable.
• Say “Quote” immediately before you start reading the quote, and then say “Endquote” immediately after the last words of the quote.
• If people can see you clearly, you can use “air quotes” by holding up one or both of your hands and moving your pointer and index fingers up and down, as if you were drawing quotation marks in the air.

Citing on Visuals

What Makes Citing on Visuals Special

In the same way that you cite the source of everything in your paper that did not originate in your own head, you must also cite the sources of the text and images that appear on your visuals.  You need to cite-as-you-go on your visuals too, because your audience can’t page back and forth in your PowerPoint. Again, keep in mind how much information your audience can handle at once.  Remember the public speaking maxim: your visuals should guide your audience’s attention and support what you’re saying, not distract from what you’re saying.

• Use a smaller font
• Use italics for the source (and then use underlining, not italics, for book titles)
• Use a different color
• Make the citation big enough so people can see it from anywhere in the room.
• Don’t make your slides too busy. It’s okay if you don’t have enough space for all the information you would put on a formally formatted reference list. If trimming your citation, leave in the most important information: e.g. the author’s name, the title of the book or article, the sponsor and title of a website, the title of any book or journal the work is in (in the case of an article), and the date.
• If your visual is a mashup, you still need to cite the sources of information, quotes, and images: in short, credit everything that someone else made that appears in your mashup. Use the same brief methods in the mashup that you use for other visual aids—sort of like the names and descriptions that flash on the screen when people are interviewed in a documentary or in a newscast. Make sure that you leave the citations showing long enough that someone can read them. If you add a source list and/or a set of credits at the end (don’t forget to credit the music!), make sure they scroll slowly enough that the average person can read them.

The Full and Formal Source List

Why Have a Formal Source List Available?

You might get questions that require you to refer to sources that you used in your full study, but did not use in the presentation. If you have a formal source list available, it can remind you of author names, titles, dates, and other specific information your audience might want. You might also need to repeat specific information about a source you mentioned orally or give information that was too much to put on the visual.

• Put your list in a conventional format such as MLA style, APA style, Chicago style. If your presentation is based on a paper you wrote, you can simply use the list at the end of the paper.
• Make your list easily available to you in hard copy so that you can retrieve it during the presentation or follow-up question period.
• Make sure you save an electronic copy of the reference list so that you can easily email it to an audience member if needed.
• Should you put this list as a slide at the end of the presentation? Only if you can fit it all on one slide that’s easily readable from all positions in the room. Using multiple slides often doesn’t work well because either you flip too quickly through them for them to be useful, or different audience members are interested in sources on different slides. While it might be good to have such a group of slides “just in case,” a better solution would be ready with a couple of hard copies you can hand out, if needed.

Additional Resources

• Documentation and citation
• Check out information literacy tutorials

APA Style 7th Edition: Citing Your Sources

• Basics of APA Formatting

Purpose and Overview of In-text Citations

Citations for direct quotes, one work, one author, two or more authors, group authors, etcetera, multiple works by the same author(s) in the same year, citing indirect sources.

• In Text Quick View
• Block Quotes
• Books & eBooks
• Thesis/Dissertation
• Audiovisual
• Conference Presentations
• Social Media
• Legal References
• Reports and Gray Literature
• Academic Integrity and Plagiarism

Additional Resources

• Reference Page
• Annotated Sample Student Paper Here's a sample paper provided by APA. For every style rule, there is a comment highlighted in the paper that tells you where to find the discussion of the rule in the APA Style Manual.

APA follows an author and date of publication model for citing sources in your research paper and are presented as either narrative or parenthetical citations.  The formatting does not vary due to format type, however it may deviate from the norm due to factors such as: number of authors, organization instead of individual author, lack of author, or lack of date.  By providing the standard author and date within your paper, the reader will be able to link the information presented easily to the full citation provided in the reference list.

View examples and explanations on this page or visit the In Text Quick View for more examples.

APA encourages paraphrasing over using direct quotes.  Use direct quotes when:

• Reproducing an exact definition
• Author has said something memorably or succinctly
• When you want to respond to exact wording

When creating a citation for a direct quote, provide author, year and page number for both narrative and parenthetical citations.

Ex.  University of Southern California (2020) "direct quote from author" (p. 4)  OR  "direct quote from author" (University of Southern California, 2020, p. 4).

How to cite specific parts of a source:

Author named in text:

Social historian Richard Sennett (1980) names the tendency to come to terms with difficult experiences a "purification process" whereby "threatening or painful dissonances are warded off to preserve intact a clear and articulated image of oneself and one's place in the world" (p. 11).

Author named in parentheses:

The tendency to come to terms with difficult experiences is referred to as a "purification process" whereby "threatening or painful dissonances are warded off to preserve intact a clear and articulated image of oneself and one's place in the world" (Sennett, 1980, p. 11).

These examples © Duke University Libraries http://library.duke.edu/research/citing/within/apa.html

More than one way to cite:

Flynn (1999) stated in her treatise In a recent treatise on services (Flynn, 1999) In a 1999 treatise, Flynn stated

Subsequent references to same study in same paragraph:

In her treatise on services, Flynn (1999) stated her evaluative methods…Flynn also described

One work, multiple authors

When a work has two authors, always cite both authors' names in your text:

        Significant findings in a study of Los Angeles (McCroskey & O'Keefe, 2000)

When a citation has 3 or more authors, include the last name of the first author, followed by et al. (not italicized), and the year.

        (Nishimoto et al., 1998)

For narrative citations, use the word "and" to separate authors, for parenthetical citations, use an ampersand:

         McCroskey and O'Keefe (2000) studied Los Angeles...          (McCroskey & O'Keefe, 2000)

Groups as authors

First narrative citation: National Association of Social Workers (NASW, 1987)

Subsequent narrative citation: NASW (1987)

First text citation: (National Association of Social Workers [NASW], 1987)

Subsequent text citation: (NASW, 1987)

Works with no authors

Cite the work in your text using the first few words of the reference list entry (usually the title). Put double quotation marks around the title of an article or chapter, and italicize the title of a periodical, book, brochure or report:

The policy stated in the article (“Services for Disabled Children,” 1992)

The policy stated in the book Access to Services for Children (1995)

Specific parts of a source

Indicate the page, chapter, figure, table, or equation at the appropriate point in your text. Give page numbers for quotations, and use the abbreviations for the words page and chapter:

(Aranda & Knight, 1997, p. 344)

(Ell & Castaneda, 1998, chap. 5)

Personal communications

This format applies to emails, messages from nonarchived discussion groups, electronic bulletin boards, personal interviews, telephone conversations, etc. Do not list personal communications in your reference list as they are not recoverable by your reader. In your text, provide initials and surname of communicator and as exact a date as possible.

(M. Flynn, personal communication, September 20, 1999)

Sometimes you'll have multiple works by the same author in the same year. For instance, you may reference a number of tax documents from the same year, which would all be cited with (Internal Revenue Service, 2012).  So how do you differentiate?

In those instances, differentiate sources with a letter after the year. From the example above, the 990 form might be (Internal Revenue Service, 2012a) and the 1040 form would be (Internal Revenue Service, 2012b).  Just make sure the letters stay consistent in your reference list!

Sometimes, you will use a source that you didn't yourself read.  In those cases, the original source came from a secondary source you did read.  APA states that you should use secondary sources sparingly and may occur when "the original work is out of print, unavailable, or available only in a language that you do not understand."

When using secondary sources, indicate it by included "as cited in" as part of your in-text citation

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APA Citation Style Guide (7th Edition)

• In-text: Multiple Authors
• In-text: First and Subsequent Citations
• In-text: Authors and Dates Matching
• APA Examples- Print
• APA Examples- Electronic
• APA Examples- Multimedia
• Step 1- Author
• Step 2- Date
• Step 3- Title
• Step 4- Source
• Guide to Citing Sources This link opens in a new window

How to Use This Guide

Citations are a two-part system: in-text citations connected to reference list citations .

This guide will help you create in-text citations that correlate with the corresponding reference list citations.

Follow the assignment formatting instructions provided by your professors.  They often dictate which style and edition they prefer you use.  If you are uncertain, it's usually best to ask them directly what they prefer. 

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If you are citing a source that has multiple authors, follow the directions below.

Multiple Authors

• 3 or More Authors:

Always cite both authors' names in-text every time you reference them.

Johnson and Smith (2019) found...

...was their conclusion (Johnson & Smith, 2019).

If a document has three or more authors, simply provide the last name of the first author with "et al." from the first citation to the last.

   Ramirez et al. (2017) likened abnormal psychology to...

   ... distractions (Ramirez et al., 2017).

Important Note: If you have two or more documents that look the same when shortened, please follow the guidelines set out in the Authors and Dates Matching section.

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COMM 131/132: Public Speaking

• Verbal Citations
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Cite your sources in APA Style

• APA Style (7th Edition) Cook Library's guide to APA Style has examples for many APA citation formats including book, journal article, website and audiovisual works.

Why cite in your speech?

Verbally citing source in your speech will:

• Add credibility to your statements
• Show the audience you know your stuff
• Give credit to others for their work and ideas

Creating a Verbal Citation

Your verbal citation should be brief but highlight the most important information: who, what and when.

• Author Credentials
• Title of work (article, report, etc.)
• Date of work (if relevant)

Use an introductory phrase:

"According to Professor Dumbledore at Hogwarts University..."

"Rita Sketter, a journalist with the Daily Prophet, wrote in her 2014 article..."

Verbally cite your sources

Chart revised from Janene Davison

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Citing Multiple Works

When citing multiple works parenthetically, place the citations in alphabetical order, separating them with semicolons.

(Adams et al., 2019; Shumway & Shulman, 2015; Westinghouse, 2017)

Arrange two or more works by the same authors by year of publication.

• Place citations with no date first.
• Then, order works with dates in chronological order.
• Place in-press citations last.

Give the authors’ surnames once; for each subsequent work, give only the date.

(Department of Veterans Affairs, n.d., 2017a, 2017b, 2019)

Zhou (n.d., 2000, 2016, in press)

Citing multiple works is covered in Section 8.12 of the APA Publication Manual, Seventh Edition

To highlight the work(s) most directly relevant to your point in a given sentence, place those citations first within parentheses in alphabetical order and then insert a semicolon and a phrase, such as “see also,” before the first of the remaining citations, which should also be in alphabetical order. This strategy allows authors to emphasize, for example, the most recent or most important research on a topic, which would not be reflected by alphabetical order alone.

(Sampson & Hughes, 2020; see also Augustine, 2017; Melara et al., 2018; Pérez, 2014)

If multiple sources are cited within the narrative of a sentence, they can appear in any order.

Suliman (2018), Gutiérrez (2012, 2017), and Medina and Reyes (2019) examined . . .

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• Writing Tips

How to Cite Multiple Authors in APA style

3-minute read

• 18th June 2023

According to the Guinness Book of World Records , the highest number of authors to work on a single peer-reviewed academic paper is 15,025. While you may not ever encounter a source with that many authors during your own research , you’ll probably come across works with more than one author.

In this post, we’ll show you how to cite multiple authors in APA style, both in the text and on the reference page.

Creating a Reference List Entry for Two Authors

To write a reference list entry for a work with two authors, follow this basic format when listing the authors:

List the authors by their last names and initials, and use a comma followed by an ampersand to separate the two names. Here’s an example of what this might look like for a book entry:

Citing 3–20 Authors on a Reference Page

APA 7 differs from APA 6 on how to cite 3–20 authors on a reference page. APA 6 requires listing up to six names in full, followed by an ellipsis and the final author’s name. APA 7 requires that you list all the authors’ names, with an ampersand separating the last two. Follow this basic format for up to 20 authors in APA 7:

Here’s what this might look like for a book on the reference page:

Citing More than 20 Authors on a Reference Page

In APA 7, if a work contains 21 or more authors, list the surnames and initials of the first 19, followed by a comma, an ellipsis, and the name of the final author. Follow this basic format:

Note that you should not use an ampersand in this scenario, only an ellipsis.

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How to Cite Multiple Authors in the Text

When writing a narrative citation for a work with two authors, use “and” between the authors’ names rather than an ampersand. Immediately follow the authors’ names with the year of publication in parentheses. For example:

However, for a parenthetical citation , use an ampersand between the authors’ names, followed immediately by a comma and the year of publication. For example:

When citing a work with three or more authors, include the first named author, followed by “et al.” and the year of publication. In a narrative citation, this will look like:

And here’s an example of this in a parenthetical citation:

For direct quotations, you should also include the page number(s) along with the names and year.

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Apa 7th ed. style guide: citing sources in text.

• Getting Started
• Scholarly Journal Articles
• Books, Reports, Gray Literature & Presentations
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• Datasets & Tests
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• Government Documents This link opens in a new window
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• Tables & Figures This link opens in a new window
• Formatting an APA Paper
• APA Sample Paper This link opens in a new window

The table below provides examples of how to cite your sources in text, whether you use the author's name as part of the narrative or you include the citation information in parentheses (called a parenthetical citation ). For more information, refer to sections 8.17-21 of the APA Style Manual , 7th edition.  

** Define the abbreviation for a group author only once in the text, choosing either the parenthetical or the narrative format. Thereafter, use the abbreviation for all mentions of the group in the text (see Section 8.21 of  APA Style Manual , 7th edition)

Frequently Asked Questions about In-Text Citation: 

• When paraphrasing, how often should I cite a source? Do I need to include a parenthetical citation at the end of each sentence?
• How do I cite a direct quote?
• What if the work doesn't have an author?
• How do I cite more than one source in the same parentheses?
• How do I cite an indirect (secondary) source?
• How do I cite a personal communication?
• How do I cite a lecture or presentation?

When paraphrasing, how often should I cite a source? Do I need to include a parenthetical citation at the end of each sentence? (8.1)

"Avoid both undercitation and overcitation. Undercitation can lead to plagiarism (see Section 8.2) and/or self plagiarism (see Section 8.3). Even when sources cannot be retrieved (e.g. because they are personal communications; see Section 8.9), you still need to credit them in the text. Overcitation can be distracting and is unnecessary. For example, it is considered overcitation to repeat the same citation in every sentence when the source and topic have not changed. Instead, when paraphrasing a key point in more than one sentence within a paragraph, cite the source in the first sentence in which it is relevant and do not repeat the citation in subsequent sentences as long as the sources remains clear and unchanged (see Section 8.24)."

How do I cite a direct quote? (8.25)

"A direct quotation  reproduces words verbatim from another work of from your own previously published work. It is best ot paraphrase sources (see Sections 8.23-8.24) rather than directly quoting them because paraphrasing allows you to fit material to the context of your paper and writing style. Use direct quotations rather than paraphrasing when reproducing an exact definition (see example in Section 6.22), when an author has said something memorably or succinctly, or when you want to respond to exact wording (e.g., something someone said)."

"When quoting directly, always provide the author, year, and page number of the quotation in the in-text citation in either parenthetical or narrative format (see Section 8.11). To indicate a single page, use the abbreviation "p.p" (e.g., p. 25, p.S41, p. e221); for multiple pages, use the abbreviation "pp." and separate the page range with an en dash (e.g., pp. 34-36). If pages are discontinuous, use a comma between the page numbers (e.g., pp. 67, 72). If the work does not have page numbers, provide another way for the reader to locate the quotation (see Section 8.28). 

For help citing block quotations (40 words or more), see section 8.27 of the APA Manual.

What if the work doesn't have an author? (8.14)

"When the author of a work is not named, the author may be unknown (i.e., no author is listed on the work, as with a religious work) or identified specifically as "Anonymous". For works with an unknown author (see Section 9.12), include the title and year of publication in the in-text citation (note that the title moves to the author position in the reference list entry as well). If the title of the work is italicized in the reference, also italicize the title in the in-text citation. If the title of the work is not italicized in the reference, use double quotation marks around the title in the in-text citation. Capitalize these titles in the text using title case (see Section 6.17), even though sentence case is used in the reference list entry. If the title is long, shorten it for the in-text citation."

• Book with no author: ( Interpersonal Skills , 2019)
• Magazine article with no author: ("Understanding Sensory Memory", 2018)

See Section 9.49 for how to order works with no authors in the reference list. 

How do I cite more than one source in the same parentheses? (8.12)

"When citing multiple works parenthetically, place the citations in alphabetical order, separating them with semicolons. Listing both parenthetical in-text citations and reference list entries in alphabetical order helps readers locate and retrieve works because they are listed in the same order in both places."

(Fischer et al., 2011; Hasan, 2017; Polman et al., 2008)

"Arrange two or more works by the same authors by year of publication. Place citations with no date first, followed by works with dates in chronological order; in-press citations appear last. Give the authors' surnames once; for each subsequent work, give only the date."

(Drapalski, n.d., 2016, 2018)

How do I cite an indirect (secondary) source? (8.6)

An indirect or secondary source is one that is cited in another person's work. Whenever possible, find and cite the original work. In some cases, however, the original work may be unavailable, and so you must rely on the secondary citation. However, use this type of source sparingly! Consult a librarian for help finding the original source if needed. Provide the secondary source in the reference list, NOT the original source; in text, name the original work and give the citation for the secondary source (listed in your reference list): 

Gunderson's research (as cited in Kuthrapali, 2017) 

If the year of the primary source is unknown, omit it from the in-text citation.

Allport's diary (as cited in Nicholson, 2003)

How do I cite a personal communication? (8.9)

Use personal communication citations only when a recoverable source is not available. Cite personal communications such as emails, letters, telephone conversations, personal interviews, etc. in the text only. Since you can't provide retrieval information for these sources, they are not included in the reference list. Give the initials as well as the surname of the communicator, and provide as exact a date as possible for when the communication occurred: 

N.D. Tyson (personal communication, June 10, 2017)

(M. Gillespie, personal communication, May 15, 2018)

How do I cite a lecture or presentation? (8.9)

"If you learned about a topic via a classroom lecture, it would be preferable to cite the research on which the instructor based the lecture. However, if the lecture contained original content not published elsewhere, cite the lecture as a personal communication " 

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Penn State University Libraries

Apa quick citation guide 6th edition.

• In-text Citation
• Citing Web Pages and Social Media
• Citing Articles
• Citing Books
• Citing Business Reports
• Other Formats
• APA Style Quiz

Using In-text Citation

Include an in-text citation when you refer to, summarize, paraphrase, or quote from another source. For every in-text citation in your paper, there must be a corresponding entry in your reference list.

APA in-text citation style uses the author's last name and the year of publication, for example: (Field, 2005). For direct quotations, include the page number as well, for example: (Field, 2005, p. 14). For sources such as websites and e-books that have no page numbers , use a paragraph number. More information on citing sources without pagination is given on the APA Style web page .

Example paragraph with in-text citation

A few researchers in the linguistics field have developed training programs designed to improve native speakers' ability to understand accented speech (Derwing, Rossiter, & Munro, 2002; Thomas, 2004). Their training techniques are based on the research described above indicating that comprehension improves with exposure to non-native speech. Derwing et al. (2002) conducted their training with students preparing to be social workers, but note that other professionals who work with non-native speakers could benefit from a similar program.

Derwing, T. M., Rossiter, M. J., & Munro, M. J. (2002). Teaching native speakers to listen to foreign-accented speech.  Journal of Multilingual and Multicultural Development, 23(4), 245-259.

Thomas, H. K. (2004).  Training strategies for improving listeners' comprehension of foreign-accented speech  (Doctoral dissertation). University of Colorado, Boulder.

Citing Web Pages In Text

Cite web pages in text as you would any other source, using the author and date if known. If the author is not known, use the title and the date as the in-text citation (for long titles just use the first few words). Your in-text citation should lead your reader to the corresponding entry in the reference list. For sources with no date use n.d. (for no date) in place of the year: (Smith, n.d.). Below are examples of using in-text citation with web pages.

Web page with author:

In-text citation

Role-play can help children learn techniques for coping with bullying (Kraiser, 2011).

Reference entry

Kraizer, S. (2011). Preventing bullying. Retrieved from http://safechild.org/categoryparents/preventing-bullying/

Web page with no author:

The term Nittany Lion was coined by Penn State football player Joe Mason in 1904 ("All things Nittany," 2006).

All things Nittany. (2006). Retrieved from http://www.psu.edu/ur/about/nittanymascot.html

Web page with no date:

Establishing regular routines, such as exercise, can help survivors of disasters recover from trauma (American Psychological Association [APA], n.d.).

American Psychological Association. (n.d.). Recovering emotionally from disaster. Retrieved from http://www.apa.org/helpcenter/recovering-disasters.aspx

General Guidelines

In-text references should immediately follow the title, word, or phrase to which they are directly relevant, rather than appearing at the end of long clauses or sentences. In-text references should always precede punctuation marks. Below are examples of using in-text citation.

Author's name in parentheses:

One study found that the most important element in comprehending non-native speech is familiarity with the topic (Gass & Varonis, 1984).

Author's name part of narrative:

Gass and Varonis (1984) found that the most important element in comprehending non-native speech is familiarity with the topic.

Group as author: First citation: (American Psychological Association [APA], 2015) Subsequent citation: (APA, 2015)

Multiple works: (separate each work with semi-colons)

Research shows that listening to a particular accent improves comprehension of accented speech in general (Gass & Varonis, 1984; Krech Thomas, 2004).

Direct quote: (include page number and place quotation marks around the direct quote)

One study found that “the listener's familiarity with the topic of discourse greatly facilitates the interpretation of the entire message” (Gass & Varonis, 1984, p. 85).

Gass and Varonis (1984) found that “the listener’s familiarity with the topic of discourse greatly facilitates the interpretation of the entire message” (p. 85).

Note:  For direct quotations of more than 40 words , display the quote as an indented block of text without quotation marks and include the authors’ names, year, and page number in parentheses at the end of the quote. For example:

This suggests that familiarity with nonnative speech in general, although it is clearly not as important a variable as topic familiarity, may indeed have some effect. That is, prior experience with nonnative speech, such as that gained by listening to the reading, facilitates comprehension. (Gass & Varonis, 1984, p. 77)

Works by Multiple Authors

APA style has specific rules for citing works by multiple authors. Use the following guidelines to determine how to correctly cite works by multiple authors in text.

Note: When using multiple authors' names as part of your narrative, rather than in parentheses, always spell out the word and. For multiple authors' names within a parenthetic citation, use &.

One author: (Field, 2005)

Two authors: (Gass & Varonis, 1984)

Three to five authors: First citation: (Tremblay, Richer, Lachance, & Cote, 2010) Subsequent citations: (Tremblay et al., 2010)

Six or more authors: (Norris-Shortle et al., 2006)

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MLA In-Text Citations: The Basics

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Guidelines for referring to the works of others in your text using MLA style are covered throughout the  MLA Handbook  and in chapter 7 of the  MLA Style Manual . Both books provide extensive examples, so it's a good idea to consult them if you want to become even more familiar with MLA guidelines or if you have a particular reference question.

Basic in-text citation rules

In MLA Style, referring to the works of others in your text is done using parenthetical citations . This method involves providing relevant source information in parentheses whenever a sentence uses a quotation or paraphrase. Usually, the simplest way to do this is to put all of the source information in parentheses at the end of the sentence (i.e., just before the period). However, as the examples below will illustrate, there are situations where it makes sense to put the parenthetical elsewhere in the sentence, or even to leave information out.

General Guidelines

• The source information required in a parenthetical citation depends (1) upon the source medium (e.g. print, web, DVD) and (2) upon the source’s entry on the Works Cited page.
• Any source information that you provide in-text must correspond to the source information on the Works Cited page. More specifically, whatever signal word or phrase you provide to your readers in the text must be the first thing that appears on the left-hand margin of the corresponding entry on the Works Cited page.

In-text citations: Author-page style

MLA format follows the author-page method of in-text citation. This means that the author's last name and the page number(s) from which the quotation or paraphrase is taken must appear in the text, and a complete reference should appear on your Works Cited page. The author's name may appear either in the sentence itself or in parentheses following the quotation or paraphrase, but the page number(s) should always appear in the parentheses, not in the text of your sentence. For example:

Both citations in the examples above, (263) and (Wordsworth 263), tell readers that the information in the sentence can be located on page 263 of a work by an author named Wordsworth. If readers want more information about this source, they can turn to the Works Cited page, where, under the name of Wordsworth, they would find the following information:

Wordsworth, William. Lyrical Ballads . Oxford UP, 1967.

In-text citations for print sources with known author

For print sources like books, magazines, scholarly journal articles, and newspapers, provide a signal word or phrase (usually the author’s last name) and a page number. If you provide the signal word/phrase in the sentence, you do not need to include it in the parenthetical citation.

These examples must correspond to an entry that begins with Burke, which will be the first thing that appears on the left-hand margin of an entry on the Works Cited page:

Burke, Kenneth. Language as Symbolic Action: Essays on Life, Literature, and Method . University of California Press, 1966.

In-text citations for print sources by a corporate author

When a source has a corporate author, it is acceptable to use the name of the corporation followed by the page number for the in-text citation. You should also use abbreviations (e.g., nat'l for national) where appropriate, so as to avoid interrupting the flow of reading with overly long parenthetical citations.

In-text citations for sources with non-standard labeling systems

If a source uses a labeling or numbering system other than page numbers, such as a script or poetry, precede the citation with said label. When citing a poem, for instance, the parenthetical would begin with the word “line”, and then the line number or range. For example, the examination of William Blake’s poem “The Tyger” would be cited as such:

The speaker makes an ardent call for the exploration of the connection between the violence of nature and the divinity of creation. “In what distant deeps or skies. / Burnt the fire of thine eyes," they ask in reference to the tiger as they attempt to reconcile their intimidation with their relationship to creationism (lines 5-6).

Longer labels, such as chapters (ch.) and scenes (sc.), should be abbreviated.

In-text citations for print sources with no known author

When a source has no known author, use a shortened title of the work instead of an author name, following these guidelines.

Place the title in quotation marks if it's a short work (such as an article) or italicize it if it's a longer work (e.g. plays, books, television shows, entire Web sites) and provide a page number if it is available.

Titles longer than a standard noun phrase should be shortened into a noun phrase by excluding articles. For example, To the Lighthouse would be shortened to Lighthouse .

If the title cannot be easily shortened into a noun phrase, the title should be cut after the first clause, phrase, or punctuation:

In this example, since the reader does not know the author of the article, an abbreviated title appears in the parenthetical citation, and the full title of the article appears first at the left-hand margin of its respective entry on the Works Cited page. Thus, the writer includes the title in quotation marks as the signal phrase in the parenthetical citation in order to lead the reader directly to the source on the Works Cited page. The Works Cited entry appears as follows:

"The Impact of Global Warming in North America." Global Warming: Early Signs . 1999. www.climatehotmap.org/. Accessed 23 Mar. 2009.

If the title of the work begins with a quotation mark, such as a title that refers to another work, that quote or quoted title can be used as the shortened title. The single quotation marks must be included in the parenthetical, rather than the double quotation.

Parenthetical citations and Works Cited pages, used in conjunction, allow readers to know which sources you consulted in writing your essay, so that they can either verify your interpretation of the sources or use them in their own scholarly work.

Author-page citation for classic and literary works with multiple editions

Page numbers are always required, but additional citation information can help literary scholars, who may have a different edition of a classic work, like Marx and Engels's  The Communist Manifesto . In such cases, give the page number of your edition (making sure the edition is listed in your Works Cited page, of course) followed by a semicolon, and then the appropriate abbreviations for volume (vol.), book (bk.), part (pt.), chapter (ch.), section (sec.), or paragraph (par.). For example:

Author-page citation for works in an anthology, periodical, or collection

When you cite a work that appears inside a larger source (for instance, an article in a periodical or an essay in a collection), cite the author of the  internal source (i.e., the article or essay). For example, to cite Albert Einstein's article "A Brief Outline of the Theory of Relativity," which was published in  Nature  in 1921, you might write something like this:

See also our page on documenting periodicals in the Works Cited .

Citing authors with same last names

Sometimes more information is necessary to identify the source from which a quotation is taken. For instance, if two or more authors have the same last name, provide both authors' first initials (or even the authors' full name if different authors share initials) in your citation. For example:

Citing a work by multiple authors

For a source with two authors, list the authors’ last names in the text or in the parenthetical citation:

Corresponding Works Cited entry:

Best, David, and Sharon Marcus. “Surface Reading: An Introduction.” Representations , vol. 108, no. 1, Fall 2009, pp. 1-21. JSTOR, doi:10.1525/rep.2009.108.1.1

For a source with three or more authors, list only the first author’s last name, and replace the additional names with et al.

Franck, Caroline, et al. “Agricultural Subsidies and the American Obesity Epidemic.” American Journal of Preventative Medicine , vol. 45, no. 3, Sept. 2013, pp. 327-333.

Citing multiple works by the same author

If you cite more than one work by an author, include a shortened title for the particular work from which you are quoting to distinguish it from the others. Put short titles of books in italics and short titles of articles in quotation marks.

Citing two articles by the same author :

Citing two books by the same author :

Additionally, if the author's name is not mentioned in the sentence, format your citation with the author's name followed by a comma, followed by a shortened title of the work, and, when appropriate, the page number(s):

Citing multivolume works

If you cite from different volumes of a multivolume work, always include the volume number followed by a colon. Put a space after the colon, then provide the page number(s). (If you only cite from one volume, provide only the page number in parentheses.)

Citing the Bible

In your first parenthetical citation, you want to make clear which Bible you're using (and underline or italicize the title), as each version varies in its translation, followed by book (do not italicize or underline), chapter, and verse. For example:

If future references employ the same edition of the Bible you’re using, list only the book, chapter, and verse in the parenthetical citation:

John of Patmos echoes this passage when describing his vision (Rev. 4.6-8).

Citing indirect sources

Sometimes you may have to use an indirect source. An indirect source is a source cited within another source. For such indirect quotations, use "qtd. in" to indicate the source you actually consulted. For example:

Note that, in most cases, a responsible researcher will attempt to find the original source, rather than citing an indirect source.

Citing transcripts, plays, or screenplays

Sources that take the form of a dialogue involving two or more participants have special guidelines for their quotation and citation. Each line of dialogue should begin with the speaker's name written in all capitals and indented half an inch. A period follows the name (e.g., JAMES.) . After the period, write the dialogue. Each successive line after the first should receive an additional indentation. When another person begins speaking, start a new line with that person's name indented only half an inch. Repeat this pattern each time the speaker changes. You can include stage directions in the quote if they appear in the original source.

Conclude with a parenthetical that explains where to find the excerpt in the source. Usually, the author and title of the source can be given in a signal phrase before quoting the excerpt, so the concluding parenthetical will often just contain location information like page numbers or act/scene indicators.

Here is an example from O'Neill's  The Iceman Cometh.

WILLIE. (Pleadingly) Give me a drink, Rocky. Harry said it was all right. God, I need a drink.

ROCKY. Den grab it. It's right under your nose.

WILLIE. (Avidly) Thanks. (He takes the bottle with both twitching hands and tilts it to his lips and gulps down the whiskey in big swallows.) (1.1)

Citing non-print or sources from the Internet

With more and more scholarly work published on the Internet, you may have to cite sources you found in digital environments. While many sources on the Internet should not be used for scholarly work (reference the OWL's  Evaluating Sources of Information  resource), some Web sources are perfectly acceptable for research. When creating in-text citations for electronic, film, or Internet sources, remember that your citation must reference the source on your Works Cited page.

Sometimes writers are confused with how to craft parenthetical citations for electronic sources because of the absence of page numbers. However, these sorts of entries often do not require a page number in the parenthetical citation. For electronic and Internet sources, follow the following guidelines:

• Include in the text the first item that appears in the Work Cited entry that corresponds to the citation (e.g. author name, article name, website name, film name).
• Do not provide paragraph numbers or page numbers based on your Web browser’s print preview function.
• Unless you must list the Web site name in the signal phrase in order to get the reader to the appropriate entry, do not include URLs in-text. Only provide partial URLs such as when the name of the site includes, for example, a domain name, like  CNN.com  or  Forbes.com,  as opposed to writing out http://www.cnn.com or http://www.forbes.com.

Miscellaneous non-print sources

Two types of non-print sources you may encounter are films and lectures/presentations:

In the two examples above “Herzog” (a film’s director) and “Yates” (a presentor) lead the reader to the first item in each citation’s respective entry on the Works Cited page:

Herzog, Werner, dir. Fitzcarraldo . Perf. Klaus Kinski. Filmverlag der Autoren, 1982.

Yates, Jane. "Invention in Rhetoric and Composition." Gaps Addressed: Future Work in Rhetoric and Composition, CCCC, Palmer House Hilton, 2002. Address.

Electronic sources

Electronic sources may include web pages and online news or magazine articles:

In the first example (an online magazine article), the writer has chosen not to include the author name in-text; however, two entries from the same author appear in the Works Cited. Thus, the writer includes both the author’s last name and the article title in the parenthetical citation in order to lead the reader to the appropriate entry on the Works Cited page (see below).

In the second example (a web page), a parenthetical citation is not necessary because the page does not list an author, and the title of the article, “MLA Formatting and Style Guide,” is used as a signal phrase within the sentence. If the title of the article was not named in the sentence, an abbreviated version would appear in a parenthetical citation at the end of the sentence. Both corresponding Works Cited entries are as follows:

Taylor, Rumsey. "Fitzcarraldo." Slant , 13 Jun. 2003, www.slantmagazine.com/film/review/fitzcarraldo/. Accessed 29 Sep. 2009. 

"MLA Formatting and Style Guide." The Purdue OWL , 2 Aug. 2016, owl.english.purdue.edu/owl/resource/747/01/. Accessed 2 April 2018.

Multiple citations

To cite multiple sources in the same parenthetical reference, separate the citations by a semi-colon:

Time-based media sources

When creating in-text citations for media that has a runtime, such as a movie or podcast, include the range of hours, minutes and seconds you plan to reference. For example: (00:02:15-00:02:35).

When a citation is not needed

Common sense and ethics should determine your need for documenting sources. You do not need to give sources for familiar proverbs, well-known quotations, or common knowledge (For example, it is expected that U.S. citizens know that George Washington was the first President.). Remember that citing sources is a rhetorical task, and, as such, can vary based on your audience. If you’re writing for an expert audience of a scholarly journal, for example, you may need to deal with expectations of what constitutes “common knowledge” that differ from common norms.

Other Sources

The MLA Handbook describes how to cite many different kinds of authors and content creators. However, you may occasionally encounter a source or author category that the handbook does not describe, making the best way to proceed can be unclear.

In these cases, it's typically acceptable to apply the general principles of MLA citation to the new kind of source in a way that's consistent and sensible. A good way to do this is to simply use the standard MLA directions for a type of source that resembles the source you want to cite.

You may also want to investigate whether a third-party organization has provided directions for how to cite this kind of source. For example, Norquest College provides guidelines for citing Indigenous Elders and Knowledge Keepers⁠ —an author category that does not appear in the MLA Handbook . In cases like this, however, it's a good idea to ask your instructor or supervisor whether using third-party citation guidelines might present problems.

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• Introduction
• Parenthetical vs. narrative
• Multiple authors

Missing information

• Sources to include

Tools and resources

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How to create APA citations

APA Style is widely used by students, researchers, and professionals in the social and behavioral sciences. Scribbr’s free citation generator automatically generates accurate references and in-text citations.

This citation guide outlines the most important citation guidelines from the 7th edition APA Publication Manual (2020).

• Cite a webpage
• Cite a book
• Cite a journal article
• Cite a YouTube video

APA in-text citations

APA in-text citations include the author’s last name, publication date, and, if relevant, a locator such as a page number or timestamp. For example, (Smith, 2021, p. 170) . See it as a shorter version of the entry in the reference list .

You should include in-text citations every time you’re quoting or paraphrasing someone else’s ideas or words. In doing so, you give credit to the original author and avoid plagiarism .

Parenthetical vs. narrative citation

The in-text citation can take two forms: parenthetical and narrative. Both types are generated automatically when citing a source with Scribbr’s APA Citation Generator.

• Parenthetical citation: According to new research … (Smith, 2020) .
• Narrative citation: Smith (2020) notes that …

Multiple authors and corporate authors

The in-text citation changes slightly when a source has multiple authors or an organization as an author. Pay attention to punctuation and the use of the ampersand (&) symbol.

When the author, publication date or locator is unknown, take the steps outlined below.

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APA references

APA references generally include information about the author , publication date , title , and source . Depending on the type of source, you may have to include extra information that helps your reader locate the source.

It is not uncommon for certain information to be unknown or missing, especially with sources found online. In these cases, the reference is slightly adjusted.

Formatting the APA reference page

On the first line of the page, write the section label “References” (in bold and centered). On the second line, start listing your references in alphabetical order .

Apply these formatting guidelines to the APA reference page:

• Double spacing (within and between references)
• Hanging indent of ½ inch
• Legible font (e.g. Times New Roman 12 or Arial 11)
• Page number in the top right header

Which sources to include

On the reference page, you only include sources that you have cited in the text (with an in-text citation ). You should not include references to personal communications that your reader can’t access (e.g. emails, phone conversations or private online material).

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When scientific citations go rogue: Uncovering ‘sneaked references’

Assistant Professor in Data Visualization, Linköping University

Professeur des universités, Institut de Recherche en Informatique de Toulouse

Contributor

Directeur de Recherche Inria en charge de la médiation scientifique, Inria

Disclosure statement

Lonni Besançon receives funding from the Marcus And Amalia Wallenberg foundation.

Guillaume Cabanac receives funding from the European Research Council (ERC) and the Institut Universitaire de France (IUF). He is the administrator of the Problematic Paper Screener, a public platform that uses metadata from Digital Science and PubPeer via no-cost agreements.

Thierry Viéville does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment.

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A researcher working alone – apart from the world and the rest of the wider scientific community – is a classic yet misguided image. Research is, in reality, built on continuous exchange within the scientific community: First you understand the work of others, and then you share your findings.

Reading and writing articles published in academic journals and presented at conferences is a central part of being a researcher. When researchers write a scholarly article, they must cite the work of peers to provide context, detail sources of inspiration and explain differences in approaches and results. A positive citation by other researchers is a key measure of visibility for a researcher’s own work.

But what happens when this citation system is manipulated? A recent Journal of the Association for Information Science and Technology article by our team of academic sleuths – which includes information scientists, a computer scientist and a mathematician – has revealed an insidious method to artificially inflate citation counts through metadata manipulations: sneaked references.

Hidden manipulation

People are becoming more aware of scientific publications and how they work, including their potential flaws. Just last year more than 10,000 scientific articles were retracted . The issues around citation gaming and the harm it causes the scientific community, including damaging its credibility, are well documented.

Citations of scientific work abide by a standardized referencing system: Each reference explicitly mentions at least the title, authors’ names, publication year, journal or conference name, and page numbers of the cited publication. These details are stored as metadata, not visible in the article’s text directly, but assigned to a digital object identifier, or DOI – a unique identifier for each scientific publication.

References in a scientific publication allow authors to justify methodological choices or present the results of past studies, highlighting the iterative and collaborative nature of science.

However, we found through a chance encounter that some unscrupulous actors have added extra references, invisible in the text but present in the articles’ metadata, when they submitted the articles to scientific databases. The result? Citation counts for certain researchers or journals have skyrocketed, even though these references were not cited by the authors in their articles.

Chance discovery

The investigation began when Guillaume Cabanac, a professor at the University of Toulouse, wrote a post on PubPeer , a website dedicated to postpublication peer review, in which scientists discuss and analyze publications. In the post, he detailed how he had noticed an inconsistency: a Hindawi journal article that he suspected was fraudulent because it contained awkward phrases had far more citations than downloads, which is very unusual.

The post caught the attention of several sleuths who are now the authors of the JASIST article . We used a scientific search engine to look for articles citing the initial article. Google Scholar found none, but Crossref and Dimensions did find references. The difference? Google Scholar is likely to mostly rely on the article’s main text to extract the references appearing in the bibliography section, whereas Crossref and Dimensions use metadata provided by publishers.

A new type of fraud

To understand the extent of the manipulation, we examined three scientific journals that were published by the Technoscience Academy, the publisher responsible for the articles that contained questionable citations.

Our investigation consisted of three steps:

We listed the references explicitly present in the HTML or PDF versions of an article.

We compared these lists with the metadata recorded by Crossref, discovering extra references added in the metadata but not appearing in the articles.

We checked Dimensions, a bibliometric platform that uses Crossref as a metadata source, finding further inconsistencies.

In the journals published by Technoscience Academy, at least 9% of recorded references were “sneaked references.” These additional references were only in the metadata, distorting citation counts and giving certain authors an unfair advantage. Some legitimate references were also lost, meaning they were not present in the metadata.

In addition, when analyzing the sneaked references, we found that they highly benefited some researchers. For example, a single researcher who was associated with Technoscience Academy benefited from more than 3,000 additional illegitimate citations. Some journals from the same publisher benefited from a couple hundred additional sneaked citations.

We wanted our results to be externally validated, so we posted our study as a preprint , informed both Crossref and Dimensions of our findings and gave them a link to the preprinted investigation. Dimensions acknowledged the illegitimate citations and confirmed that their database reflects Crossref’s data. Crossref also confirmed the extra references in Retraction Watch and highlighted that this was the first time that it had been notified of such a problem in its database. The publisher, based on Crossref’s investigation, has taken action to fix the problem.

Implications and potential solutions

Why is this discovery important? Citation counts heavily influence research funding, academic promotions and institutional rankings. Manipulating citations can lead to unjust decisions based on false data. More worryingly, this discovery raises questions about the integrity of scientific impact measurement systems, a concern that has been highlighted by researchers for years. These systems can be manipulated to foster unhealthy competition among researchers, tempting them to take shortcuts to publish faster or achieve more citations.

To combat this practice we suggest several measures:

Rigorous verification of metadata by publishers and agencies like Crossref.

Independent audits to ensure data reliability.

Increased transparency in managing references and citations.

This study is the first, to our knowledge, to report a manipulation of metadata. It also discusses the impact this may have on the evaluation of researchers. The study highlights, yet again, that the overreliance on metrics to evaluate researchers, their work and their impact may be inherently flawed and wrong.

Such overreliance is likely to promote questionable research practices, including hypothesizing after the results are known, or HARKing ; splitting a single set of data into several papers, known as salami slicing; data manipulation; and plagiarism. It also hinders the transparency that is key to more robust and efficient research. Although the problematic citation metadata and sneaked references have now been apparently fixed, the corrections may have, as is often the case with scientific corrections , happened too late.

This article is published in collaboration with Binaire , a blog for understanding digital issues.

This article was originally published in French .

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• Scientific fraud
• Data research
• Scholarly publications

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