Cita APA

Schaefer, R. T., & Lamm, R. P. (1997). Sociology--a brief introduction (2nd ed.). McGraw-Hill Companies.

Citación estilo Chicago

Schaefer, Richard T., and Robert P. Lamm. Sociology--a Brief Introduction. 2nd ed. New York: McGraw-Hill Companies, 1997.

Cita MLA

Schaefer, Richard T., and Robert P. Lamm. Sociology--a Brief Introduction. 2nd ed. McGraw-Hill Companies, 1997.