APA citiranje

Wagenaar, T. C., & Babbie, E. (1998). The practice of social rasearch (Eighth ed.). Belmont: Wadsworth.

Trích dẫn kiểu Chicago

Wagenaar, Theodore C., và Earl Babbie. The Practice of Social Rasearch. Eighth ed. Belmont: Wadsworth, 1998.

MLA citiranje

Wagenaar, Theodore C., và Earl Babbie. The Practice of Social Rasearch. Eighth ed. Belmont: Wadsworth, 1998.