Cita APA (7th ed.)

Napier, R. W., & Gershenfeld, M. K. (1985). Groups: Theory and experience (3rd ed.). Houghton Mifflin.

Cita Chicago (17th ed.)

Napier, Rodney W., i Matti K. Gershenfeld. Groups: Theory and Experience. 3rd ed. Boston: Houghton Mifflin, 1985.

Cita MLA (8th ed.)

Napier, Rodney W., i Matti K. Gershenfeld. Groups: Theory and Experience. 3rd ed. Houghton Mifflin, 1985.