Marianne Schneider Corey & Gerald Corey. (2006). Groups: Process and practice (7.). Brooks/Cole.
Chicago Edition CitationMarianne Schneider Corey i Gerald Corey. Groups: Process and Practice. 7. Australia: Brooks/Cole, 2006.
Cita MLAMarianne Schneider Corey i Gerald Corey. Groups: Process and Practice. 7. Brooks/Cole, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.