How do I format a DOI in APA style?

In your reference list entry for a journal article or other online source, APA currently recommends writing the full DOI address that gives access to the article. For example:

https://doi.org/10.1037/rev0000126

The old guidelines were to present DOIs by writing “doi:” followed by the numerical string. For example:

doi:10.1037/rev0000126

If you’re following the 6th edition, this format is still accepted, as long as it’s used consistently.