Cita APA (7th ed.)
Schaefer, R. T. (2008). Sociology (11th ed.). McGraw-Hill.
Cita Chicago (17th ed.)
Schaefer, Richard T. Sociology. 11th ed. Boston: McGraw-Hill, 2008.
Cita MLA (9th ed.)
Schaefer, Richard T. Sociology. 11th ed. McGraw-Hill, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.