Skip to main content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Collect and organize citations. Create reference lists.
To learn more, click the link below.
If a DOI (Digital Object Identifier) exists for a publication, the APA style manual requires that it be included at the end of the citation in the reference list. Sometimes DOIs are listed in the article databases, but not always. To doublecheck whether or not a DOI exists, use this search feature at crossref.org.
More style guides and citation resources
APA Style Blog
For really tricky questions regarding APA style, try the APA Style Blog, which covers many topics that are not included or clearly explained in the print manual.
Purdue OWL: APA Style
Information on formatting papers in APA (American Psychological Association) style, creating Works Cited lists and formatting in text citations.