APA style, developed by the American Psychological Association, is used for hard sciences and social sciences, including education. APA uses parenthetical citations within the text and a corresponding bibliography or references list at the end of the paper.
What is a DOI?
A DOI, Digital Object Identifier, is a unique code used to permanently identify an article or document and link to it on the web. (It's kind of like your CCAC ID number which is only associated with you!)
What is there isn't a DOI?
No DOI? Just use the URL associated with the article!
Union University: Using APA Style for References and Citations Video Tutorial