Cita APA (7th ed.)
Babbie, E. (2010). The practice of social research (12th ed.). Thomson/Wadsworth.
Cita Chicago (17th ed.)
Babbie, Earl. The Practice of Social Research. 12th ed. Belmont, CA: Thomson/Wadsworth, 2010.
Cita MLA (9th ed.)
Babbie, Earl. The Practice of Social Research. 12th ed. Thomson/Wadsworth, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.