APA (7e ed.) Bronvermelding

PETTIJOHN, T. F. (1987). Psychology A Concise Introduction Terry F. Pettijohn. The Dushkin Publising Group.

Chicago (17e ed.) Bronvermelding

PETTIJOHN, Terry F. Psychology A Concise Introduction Terry F. Pettijohn. The Dushkin Publising Group, 1987.

MLA (8e ed.) Bronvermelding

PETTIJOHN, Terry F. Psychology A Concise Introduction Terry F. Pettijohn. The Dushkin Publising Group, 1987.