Citazione Stile APA (7a Edizione)

Babbie, E. R. (1989). The practice of social research. Wadsworth Publishing Company.

Citazione stile Chigago Style (17a edizione)

Babbie, Earl R. The Practice of Social Research. Belmont, California: Wadsworth Publishing Company, 1989.

Citatione MLA (9a ed.)

Babbie, Earl R. The Practice of Social Research. Wadsworth Publishing Company, 1989.