Cita APA (7a ed.)

Earl, B. (2004). The practical social research (1st edition.). Thompson.

Cita Chicago Style (17a ed.)

Earl, Babbie. The Practical Social Research. 1st edition. New Delhi: Thompson, 2004.

Cita MLA (9a ed.)

Earl, Babbie. The Practical Social Research. 1st edition. Thompson, 2004.