Não informado. (1999). Journal of group psychotherapy, psychodrama and sociometry. Heldref Publications.
Chicago-referens (17:e uppl.)Não informado. Journal of Group Psychotherapy, Psychodrama and Sociometry. Washington: Heldref Publications, 1999.
MLA-referens (8:e uppl.)Não informado. Journal of Group Psychotherapy, Psychodrama and Sociometry. Heldref Publications, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.