Format the DOI and URLs as hyperlinks - beginning with http:// or https://.
It is acceptable to use either the default settings for hyperlinks. Usually blue font, underlined.
![](//libapps.s3.amazonaws.com/accounts/1919/images/APA_journal_doi.JPG)
If a journal does not have a DOI, do not include any DOI or URL in the reference. There is no longer the requirement to include the URL of the journal's homepage.
![](//libapps.s3.amazonaws.com/accounts/1919/images/Journal_article_no_doi.JPG)