Warner, F., & Thrapp, R. (1972). Readings in controversial issues in education of the mentally retarded. MSS Information Corp.
Chicago-Zitierstil (17. Ausg.)Warner, Frank, und Robert Thrapp. Readings in Controversial Issues in Education of the Mentally Retarded. New York: MSS Information Corp, 1972.
MLA-Zitierstil (8. Ausg.)Warner, Frank, und Robert Thrapp. Readings in Controversial Issues in Education of the Mentally Retarded. MSS Information Corp, 1972.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.