Answered By: Larisa Smyk
Last Updated: Aug 17, 2016     Views: 274

Some citation styles (such as APA) require DOI for referencing articles from electronic databases.

A digital object identifier (DOI) is a unique alphanumeric string that identifies content and provide a persistent link to its location on the Internet. The publisher assigns a DOI when the article is published and made available electronically.

Where to find DOI?

  • First page of the electronic journal article
  • Near the copyright notice
  • Database landing page for an article
  • In the citation generated by the database
  • Online using the free DOI lookup on

Not all articles or journals use DOIs. if you can't find a DOI you can use the persistent (or permanent, or stable) link url in your citation instead.

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