Cita APA (7a ed.)
Pettijohn, T. F. (1992). Psychology: A concise introduction (3rd ed.). Dushkin Pub. Group.
Cita Chicago Style (17a ed.)
Pettijohn, Terry F. Psychology: A Concise Introduction. 3rd ed. Guilford, Conn.: Dushkin Pub. Group, 1992.
Cita MLA (9a ed.)
Pettijohn, Terry F. Psychology: A Concise Introduction. 3rd ed. Dushkin Pub. Group, 1992.
Precaución: Estas citas no son 100% exactas.