Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.