Cita APA (7a ed.)

Babbie, E. (1992). The practice of social research (6th ed.). Wadsworth.

Cita Chicago Style (17a ed.)

Babbie, Earl. The Practice of Social Research. 6th ed. California: Wadsworth, 1992.

Cita MLA (9a ed.)

Babbie, Earl. The Practice of Social Research. 6th ed. Wadsworth, 1992.