APA (7th ed.) Zitazioa

Napier, R. W. (1981). Groups: Theory and experience (2nd.ed.). Houghton Mifflin.

Chicago Style (17th ed.) Zitazioa

Napier, Rodney W. Groups: Theory and Experience. 2nd.ed. Boston: Houghton Mifflin, 1981.

MLA (9th ed.) Zitazioa

Napier, Rodney W. Groups: Theory and Experience. 2nd.ed. Houghton Mifflin, 1981.