A DOI, or Digital Object Identifier, is a unique, persistent identifier assigned to digital objects like electronic versions of journal articles. In your References/Works Cited page, include the article's DOI if it is provided in the article. The DOI is the last element of a citation, when included.
DOIs should included the prefix https://dor.org/xxx
If the DOI does not include that prefix, add/edit it before the actual number.
The order of preference for the "address" of a digital object is: 1. DOI 2. Permalink 3. URL.