Warner, F., & Thrapp, R. (1972). Readings in controversial issues in education of the mentally retarded. MSS Information Corp.
Chicago-referens (17:e uppl.)Warner, Frank, och Robert Thrapp. Readings in Controversial Issues in Education of the Mentally Retarded. New York: MSS Information Corp, 1972.
MLA-referens (8:e uppl.)Warner, Frank, och Robert Thrapp. Readings in Controversial Issues in Education of the Mentally Retarded. MSS Information Corp, 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.