Cita APA (7th ed.)

Babbie, E. R. (2007). The practice of social research (Eleventh edition.). Thomson/Wadsworth.

Cita Chicago (17th ed.)

Babbie, Earl R. The Practice of Social Research. Eleventh edition. Australia: Thomson/Wadsworth, 2007.

Cita MLA (9th ed.)

Babbie, Earl R. The Practice of Social Research. Eleventh edition. Thomson/Wadsworth, 2007.