Citazione Stile APA (7a Edizione)

Babbie, E. R. (2013). The practice of social research (13th ed.). Wadsworth Cengage Learning.

Citazione stile Chigago Style (17a edizione)

Babbie, Earl R. The Practice of Social Research. 13th ed. Belmont, Calif.: Wadsworth Cengage Learning, 2013.

Citatione MLA (9a ed.)

Babbie, Earl R. The Practice of Social Research. 13th ed. Wadsworth Cengage Learning, 2013.