Schaefer, R. T., & Lamm, R. P. (1997). Sociology: A Brief Introduction (2nd ed.). The McGraw-Hill Companies, Inc.
Cita Chicago Style (17a ed.)Schaefer, Richard T., y Robert P. Lamm. Sociology: A Brief Introduction. 2nd ed. New York: The McGraw-Hill Companies, Inc, 1997.
Cita MLA (9a ed.)Schaefer, Richard T., y Robert P. Lamm. Sociology: A Brief Introduction. 2nd ed. The McGraw-Hill Companies, Inc, 1997.
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