Answered By: Theresa Bell
Last Updated: Dec 07, 2017     Views: 2056

A DOI is "is a unique alphanumeric string assigned by a registration agency (the International DOI Foundation) to identify content and provide a persistent link to its location on the Internet" (American Psychological Association, 2010, p. 189). The DOI may "be hidden under a button labeled Article, Crossref, PubMed, or another full-text vendor name" (p. 189) when you retrieve the article from one of RRU's electronic databases. Click on the button to see the DOI. If a DOI is available for an article, no other retrieval information is required; however, if the article hasn't been assigned a DOI but was retrieved from a password-protected database, provide the home page URL of the database or the name of the database instead of a DOI. See "How do I reference a journal article that has a DOI in APA Style?" and "How do I reference a journal article in APA Style (no DOI)?" for more information.

Here's the format for a journal article reference that uses a DOI:

Author, A.A., Author, B. B., & Author, C. C. (year). Title of article. Title of Periodical, xx(x), pp-pp. doi: xxxxxxxxx OR OR

Please see "A DOI Primer" and "DOI Display Guidelines Update (March 2017)" from the APA Style Blog for more information on DOIs. 


American Psychological Association. (2010). Publication manual of the American Psychological Association (6th ed.). Washington, DC: Author.