Citazione Stile APA (7a Edizione)

Babbie, E. R. (2001). The practice of social research (9th ed.). Wadsworth Thomson Learning.

Citazione stile Chigago Style (17a edizione)

Babbie, Earl R. The Practice of Social Research. 9th ed. Belmont, CA: Wadsworth Thomson Learning, 2001.

Citatione MLA (9a ed.)

Babbie, Earl R. The Practice of Social Research. 9th ed. Wadsworth Thomson Learning, 2001.