APA (7e ed.) Bronvermelding

Duffy, K. G. (1998). Annual Editions: Psychology. 1998/99. Dushkin/McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Duffy, Karen G. Annual Editions: Psychology. 1998/99. Guilford: Dushkin/McGraw-Hill, 1998.

MLA (9e ed.) Bronvermelding

Duffy, Karen G. Annual Editions: Psychology. 1998/99. Dushkin/McGraw-Hill, 1998.