Dyfyniad APA

American Psychological Association. (2005). Concise rules of APA style. American Psychological Association.

Dyfyniad Arddull Chicago

American Psychological Association. Concise Rules of APA Style. Washington, D.C: American Psychological Association, 2005.

Dyfyniad MLA

American Psychological Association. Concise Rules of APA Style. American Psychological Association, 2005.

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