(1956). Reaching the group: An analysis of group work methods used with teen-agers. New York City Youth Board.
Chicago-Zitierstil (17. Ausg.)Reaching the Group: An Analysis of Group Work Methods Used with Teen-agers. New York, N.Y: New York City Youth Board, 1956.
MLA-Zitierstil (9. Ausg.)Reaching the Group: An Analysis of Group Work Methods Used with Teen-agers. New York City Youth Board, 1956.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.