Cita APA (7th ed.)

Babbie, E. R. (2013). The practice of social research (13th ed.). Wadsworth Cengage Learning.

Cita Chicago (17th ed.)

Babbie, Earl R. The Practice of Social Research. 13th ed. Belmont, Calif.: Wadsworth Cengage Learning, 2013.

Cita MLA (9th ed.)

Babbie, Earl R. The Practice of Social Research. 13th ed. Wadsworth Cengage Learning, 2013.