APA-viite

Babbie, E. R. (1979). Practice of social research (2.). Wadsworth Publishers.

Chicago-tyylinen lähdeviittaus

Babbie, Earl R. Practice of Social Research. 2. California: Wadsworth Publishers, 1979.

MLA-viite

Babbie, Earl R. Practice of Social Research. 2. Wadsworth Publishers, 1979.