Citazione Stile APA (7a Edizione)

Napier, R. W., & Gershenfeld, M. K. (1989). Groups: Theory and experience (4th ed.). Houghton Mifflin.

Citazione stile Chigago Style (17a edizione)

Napier, Rodney W., e Matti K. Gershenfeld. Groups: Theory and Experience. 4th ed. Boston: Houghton Mifflin, 1989.

Citatione MLA (9a ed.)

Napier, Rodney W., e Matti K. Gershenfeld. Groups: Theory and Experience. 4th ed. Houghton Mifflin, 1989.