Cita APA (7th ed.)
Schaefer, R. T. (2007). Sociology (10th ed.). McGraw-hill.
Cita Chicago (17th ed.)
Schaefer, Richard T. Sociology. 10th ed. New York: McGraw-hill, 2007.
Cita MLA (9th ed.)
Schaefer, Richard T. Sociology. 10th ed. McGraw-hill, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.