Não informado. (1999). Journal of group psychotherapy, psychodrama and sociometry. Heldref Publications.
Chicago-Zitierstil (17. Ausg.)Não informado. Journal of Group Psychotherapy, Psychodrama and Sociometry. Washington: Heldref Publications, 1999.
MLA-Zitierstil (8. Ausg.)Não informado. Journal of Group Psychotherapy, Psychodrama and Sociometry. Heldref Publications, 1999.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.