Citazione Stile APA (7a Edizione)

Babbie, E. R. (1979). The practice of social research. Wadsworth.

Citazione stile Chigago Style (17a edizione)

Babbie, Earl R. The Practice of Social Research. Belmont, Calif.: Wadsworth, 1979.

Citatione MLA (9a ed.)

Babbie, Earl R. The Practice of Social Research. Wadsworth, 1979.