Virkler, H. A. (1991). Speaking your mind without stepping on toes: Guidelines for group leaders included. Victor.
Chicago-Zitierstil (17. Ausg.)Virkler, Henry A. Speaking Your Mind Without Stepping on Toes: Guidelines for Group Leaders Included. New York: Victor, 1991.
MLA-Zitierstil (9. Ausg.)Virkler, Henry A. Speaking Your Mind Without Stepping on Toes: Guidelines for Group Leaders Included. Victor, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.