Cita APA (7th ed.)

Napier, R. W., & Gershenfeld, M. K. (1999). Groups, theory and experience (6th ed.). Houghton Mifflin.

Cita Chicago (17th ed.)

Napier, Rodney W., i Matti K. Gershenfeld. Groups, Theory and Experience. 6th ed. Boston: Houghton Mifflin, 1999.

Cita MLA (9th ed.)

Napier, Rodney W., i Matti K. Gershenfeld. Groups, Theory and Experience. 6th ed. Houghton Mifflin, 1999.