Corey, Marianne Schneider. Groups : process and practice / Marianne Schneider Corey, Gerald Corey. - 7th ed. - Belmont, Ca. : Thomson Books/Cole, 2006. - xviii, 460 p. : ill. ; 23 cm. ISBN: 0534607950 RM322.91 Subjects--Topical Terms: Counseling.Group Processes.Psychotherapy, Group.