The Source element requires two pieces of information: a publisher / “greater whole” and a URL / DOI (when available).
Learn how to create APA citations for articles, books, webpages, and more in the next section (APA 7 citation examples). Each tab covers a different type of information.
The second part of the Source element describes the location from where you can retrieve the work.
DOI stands for Digital Object Identifier, and is a long alphanumeric code unique to the document. Because online materials can potentially change URLs, APA recommends providing a DOI when it is available, as opposed to the URL.
If you cannot find a DOI, include the direct URL to the item.
The first part of the Source element describes the source from where you can retrieve the work. For some items this means the publisher; for others is means the "greater whole."
How do you know when to use publisher or "greater whole"?
Resources fall into one of two categories: resources that stand alone, and resources that are part of a larger published item.
APA (American Psychological Association) style is used to organize papers and cite sources, primarily within the social sciences discipline but also in health sciences and natural sciences. These disciplines include nursing, psychology, and biology.
These style guidelines provide readability and consistency so readers can:
Author, A. A., Author, B. B., & Author, C. C. (Year). Title of article. Title of Periodical, volume number(issue number), pages. DOI or static URL
Apardian, R. E., & Reid, N. (2020). Going out for a pint: Exploring the relationship between craft brewery locations and neighborhood walkability. Papers in Applied Geography, 6(1), 1-16. https://doi.org/10.1080/23754931.2019.1699151
Muhumuza, J., Molen, S. F., Bassara, G. N., Waziri, M. A., Kithinji, S. M., Sonye, K. M., ... & Lule, H. (2025). The effect of chewing gum on postoperative ileus after laparotomy for gastroduodenal perforations: A randomized controlled trial. BMC Gastroenterology, 25(1), 402. https://research.ebsco.com/linkprocessor/plink?id=0b24d006-83d6-3cd6-a760-9eafade9fb2f
When the content is the same as the print book version, you do not need to note that you used an eBook or audiobook.
Author, A. A. (Year of publication). Title of work: Capital letter also for subtitle. Publisher Name. DOI (if available)
Kobabe, M. (2020). Gender queer: A memoir. Oni Press.
Balius, F. (2024). Traces of madness: A graphic memoir. Pennsylvania State University Press. https://doi.org/10.5325/jj.15944989
When the content is the same as the print book version, you do not need to note that you used an eBook or audiobook.
Author, A. A., & Author, B. B. (Year of publication). Title of chapter. In E. E. Editor & F. F. Editor (Eds.), Title of book: Capital letter also for subtitle (pp. pages of chapter). Publisher. DOI (if available)
Aburto, G. (2025). The media and biodiversity conservation. In G. W. Frankie, A. Mata, & S. B. Vinson (Eds.), Biodiversity conservation in Costa Rica: Learning the lessons in a seasonal dry forest (pp. 257-265). University of California Press.
Balsam, K. F., Martell, C. R., Jones, K. P., & Safren, S. A. (2019). Affirmative cognitive behavior therapy with sexual and gender minority people. In G. Y. Iwamasa & P. A. Hays (Eds.), Culturally responsive cognitive behavior therapy: Practice and supervision (2nd ed., pp. 287-314). American Psychological Association. https://doi.org/10.1037/0000119-012
Author, A. A., & Author, B. B. (Year). Title of article. Title of Periodical, volume number(issue number), pages. DOI or static URL
Schumer, L. (2024). Is your dog’s food safe? Prevention, 72(1), 90–91.
Spaeth, R. (2025). The 'six seven' panic: Adolescent slang has always been impenetrable to adults. That’s the point. New York, 58(22), 6–7. https://research-ebsco-com.ccclibrary.idm.oclc.org/linkprocessor/plink?id=b855f230-04c5-3150-b5a0-609d1e91ed87
Pinsker, J. (2020, January 27). When does someone become “old”? The Atlantic. https://www.theatlantic.com/family/archive/2020/01/old-people-older-elderly-middle-age/605590/
Author, A. A. (Year, Month Day). Title of article. Title of Periodical, pages. DOI or static URL
Cronin, K. (2025, October 3). "Immaculate" skunk found in garden in Northamptonshire: The RSPCA has asked for the public's help to find the owner of a skunk found hiding under some garden decking. North Hamtonshire Telegraph Online. https://link-gale-com.ccclibrary.idm.oclc.org/apps/doc/A858210890/STND?u=clackamasccl&sid=bookmark-STND&xid=c4821429
Clifford, S. (2011, December 28). Training a cat to walk on a leash. The New York Times. https://www.nytimes.com/2011/12/29/garden/training-a-cat-to-walk-on-a-leash.html
Cole, D,. & Luhby, T. (2025, October 30). Judge indicates she’ll intervene in fight over SNAP food assistance money. CNN. https://www.cnn.com/2025/10/30/politics/boston-judge-intervene-snap-payments
Author, A. A. (n.d.) Title of webpage or item. Site Name. URL
Name of Group. (Year, Month Day). Title of webpage or item. Site Name. URL
Gage, W. (2017). How to *really* know you’re in love. Medium. https://medium.com/@krisgage/how-to-really-know-youre-in-love-d8d433a0f0bf
Clackamas County. (n.d.). Housing assistance programs. https://www.clackamas.us/socialservices/housingassistance.html
Unipiper. (2024, November 10). In Wikipedia. https://en.wikipedia.org/w/index.php?title=Unipiper&oldid=1256606214
Cole, D,. & Luhby, T. (2025, October 30). Judge indicates she’ll intervene in fight over SNAP food assistance money. CNN. https://www.cnn.com/2025/10/30/politics/boston-judge-intervene-snap-payments
AI Company Name. (year, month day). Title of chat in italics [Description, such as Generative AI chat]. Tool Name/Model. URL of the chat
AI Company Name. (year). Tool Name/Model in Italics and Title Case [Description; e.g., Large language model]. URL of the tool
Google. (2025, May 22). High school grammar concepts overview [Generative AI chat]. Gemini 2.5 Flash. https://g.co/gemini/share/a1306ce12929
OpenAI. (2025). ChatGPT [Large language model]. https://chatgpt.com/
This category includes encyclopedias, online dictionaries, thesaurus, and other "reference" works.
Lastname, A. A. (Year). Title of entry. In B. B. Lastname (Ed.), Title of reference work (edition). Publisher. URL or DOI
Institution or organization name. (Year). Title of entry. In Title of reference work. URL
Scottish Highland Games competition. (2007). In K. L. Lerner & B. W. Lerner (Eds.), World of Sports Science (Vol. 2, pp. 610-611). Gale. https://link.gale.com/apps/doc/CX3451100460/GVRL?u=clackamasccl&sid=bookmark-GVRL&xid=953d2506
Hasker, W. & Taliaferro, C. (2023). Afterlife. In E. N. Zalta & U. Nodelman (Eds.), The Stanford encyclopedia of philosophy (Spring 2023 ed.). Stanford University. https://plato.stanford.edu/entries/afterlife/
Unipiper. (2024, November 10). In Wikipedia. https://en.wikipedia.org/w/index.php?title=Unipiper&oldid=1256606214
Author, A. A. (Year, Month Date). Title of presentation [Lecture notes, PowerPoint slides, etc]. Name of Host. URL
Presenter, A. A. (Year). Title of webinar [Webinar]. Name of Organization. URL
Moore, M. J. (2025, November 11). Peer support for veterans [PowerPoint slides]. Moodle. https://online.clackamas.edu
CCC Library. (2024, October 29). Welding cracks [Google Slides slides]. https://docs.google.com/presentation/d/1mPhs6YWJI4NkOX4Rfhn78mbJ4yzcL6PWf8yGjDNz_yI/edit?usp=sharing
Springy Jen. (2025, October 16). Activating Multi-Factor Authentication (MFA) [Webinar]. Springshare. https://training.springshare.com/libapps/activating-mfa
Director, D. D. (Director). (Date of publication). Title of motion picture [Film]. Production company(s).
Executive Producer, P. P. (Executive Producer). (Date range of release). Title of series [TV series]. Production company(s).
Writer, W. W. (Writer), & Director, D. D. (Director). (Original air date). Title of episode (Season number, Episode number) [Tv series episode]. In P. Executive Producer (Executive Producer), Series title. Production company(s).
Person or group who uploaded video. (Date of publication). Title of video [Video]. Website host. URL
Kang, M., & Appelhans, C. (Directors). (2025, June 20). KPop demon hunters [Film]. Sony Pictures Animation; Netflix.
Pelecanos, G. (Writer), Chappelle, J. (Director). (2004, December 12). Middle ground (Season 3, Episode 11) [TV series episode]. In J. Chappelle's (Executive Producer), The Wire. Blown Productions; HBO.
Kurzgesagt - In a Nutshell. (2024, October 09). We fell for the oldest lie on the Internet [Video]. https://youtu.be/bgo7rm5Maqg?si=7uQmUHS6a92gDQe-
See pages 313-352 of the APA Manual for hundreds of example references. We have a copy you can check out and take home, and a copy is always available at the Research Help desk for in-library use.
Not in CCC Library? Ask a librarian to look something up for you.
If you are missing elements of a citation (e.g., no author, no date), this handout helps you build a complete APA reference citation using the information you have available.
These resources are also listed on their relevant Course Guides.