Citazione Stile APA (7a Edizione)

Babbie, E. (2007). The Practice of Social Research (11th ed.). Wadsworth, Cengage Learning.

Citazione stile Chigago Style (17a edizione)

Babbie, Earl. The Practice of Social Research. 11th ed. Belmont, CA: Wadsworth, Cengage Learning, 2007.

Citatione MLA (9a ed.)

Babbie, Earl. The Practice of Social Research. 11th ed. Wadsworth, Cengage Learning, 2007.