Cita APA (7th ed.)

Schaefer, R. T. (1998). Sociology. McGraw-Hill.

Cita Chicago (17th ed.)

Schaefer, Richard T. Sociology. New York: McGraw-Hill, 1998.

Cita MLA (9th ed.)

Schaefer, Richard T. Sociology. McGraw-Hill, 1998.

Atenció: Aquestes cites poden no estar 100% correctes.