APA (7th ed.) Zitazioa

Marcum, W. (1991). Teenagers and group dynamics. Group Books.

Chicago Style (17th ed.) Zitazioa

Marcum, Walt. Teenagers and Group Dynamics. Colorado: Group Books, 1991.

MLA (9th ed.) Zitazioa

Marcum, Walt. Teenagers and Group Dynamics. Group Books, 1991.