Answered By: Larisa Smyk Last Updated: Mar 31, 2020 Views: 361
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?