Collins, R., & Makowsky, M. (1993). The discovery of society (5th ed.). McGraw-Hill.
Cita Chicago (17th ed.)Collins, Randall, i Michael Makowsky. The Discovery of Society. 5th ed. New York: McGraw-Hill, 1993.
Cita MLA (8th ed.)Collins, Randall, i Michael Makowsky. The Discovery of Society. 5th ed. McGraw-Hill, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.