APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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