Citazione Stile APA (7a Edizione)

Babbie & Earl R. (2008). The Basics of Social Research (4th ed.). Wadsworth Cengage Learning.

Citazione stile Chigago Style (17a edizione)

Babbie e Earl R. The Basics of Social Research. 4th ed. Belmont, CA: Wadsworth Cengage Learning, 2008.

Citatione MLA (9a ed.)

Babbie e Earl R. The Basics of Social Research. 4th ed. Wadsworth Cengage Learning, 2008.