APA (7th ed.) Zitazioa
Pettijohn, T. F. (1994). Sources: Notable Selections in Psychology. DPG..
Chicago Style (17th ed.) Zitazioa
Pettijohn, Terry F. Sources: Notable Selections in Psychology. Connecticut: DPG., 1994.
MLA (9th ed.) Zitazioa
Pettijohn, Terry F. Sources: Notable Selections in Psychology. DPG., 1994.
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