Cita APA (7a ed.)
Babbie, E. R. (1979). The practice of social research (2nd ed.). Wadsworth.
Cita Chicago Style (17a ed.)
Babbie, Earl R. The Practice of Social Research. 2nd ed. Belmont: Wadsworth, 1979.
Cita MLA (9a ed.)
Babbie, Earl R. The Practice of Social Research. 2nd ed. Wadsworth, 1979.
Precaución: Estas citas no son 100% exactas.