APA (7e ed.) Bronvermelding

Duffy, K. G. (2007). Psychology: Annual editions 07/08 (37th ed.). McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Duffy, Karen G.,ed. Psychology: Annual Editions 07/08. 37th ed. Dubuque, IA: McGraw-Hill, 2007.

MLA (9e ed.) Bronvermelding

Duffy, Karen G.,ed. Psychology: Annual Editions 07/08. 37th ed. McGraw-Hill, 2007.