Citazione APA

Napier, R. W., & Gershenfeld, M. K. (1987). Groups theory and experience (4th ed.). Houghton mifflin company.

Stile di citazione Chicago

Napier, Rodney W., e Matti K. Gershenfeld. Groups Theory and Experience. 4th ed. Boston: Houghton mifflin company, 1987.

Citazione MLA

Napier, Rodney W., e Matti K. Gershenfeld. Groups Theory and Experience. 4th ed. Houghton mifflin company, 1987.