Cita APA (7a ed.)

Babbie, E. R. (1986). The practice of social research (4th ed.). Wadsworth Pub. Co..

Cita Chicago Style (17a ed.)

Babbie, Earl R. The Practice of Social Research. 4th ed. Calif.: Wadsworth Pub. Co., 1986.

Cita MLA (9a ed.)

Babbie, Earl R. The Practice of Social Research. 4th ed. Wadsworth Pub. Co., 1986.