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.

Archive: APA 6th Edition: Articles


Digital Object Identifier (DOI):

What is a DOI?

According to the APA Style website, "A digital object identifier (DOI) 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. The publisher assigns a DOI when your article is published and made available electronically. All DOI numbers begin with a 10 and contain a prefix and a suffix separated by a slash. The prefix is a unique number of four or more digits assigned to organizations; the suffix is assigned by the publisher and was designed to be flexible with publisher identification standards." 

Not all articles will have the DOI available. For articles without DOI, a shortened URL should be used. When the DOI is present, no need to list the URL. Purdue OWL specifies that whenever a DOI is available, it should be used over the URL, since they are more stable and long lasting than links. 

Useful Links for DOIs