Cita APA (7a ed.)

Babbie, E. (2004). The Practice of Social Research (10th.). Thomson Learning.

Cita Chicago Style (17a ed.)

Babbie, Earl. The Practice of Social Research. 10th. Singapore: Thomson Learning, 2004.

Cita MLA (9a ed.)

Babbie, Earl. The Practice of Social Research. 10th. Thomson Learning, 2004.