To view a list of changes from the 6th to 7th edition please review this website.
The Publication Manual of the American Psychological Association sets the standard for the format of scholarly publications in the social sciences.
Publication Manual of the American Psychological Association by CSUDH Library (2019, October 29). Introduction to citation styles: APA 7th ed. [Video file]. Retrieved from https://www.youtube.com/watch?v=_fVv2Jt0o18
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DOIs or digital object identifiers are serial numbers that identify a source regardless of URL changes.