Não informado. (1968). Teaching exceptional children. Council for Exceptional Children.
Chicago-referens (17:e uppl.)Não informado. Teaching Exceptional Children. Reston, Va: Council for Exceptional Children, 1968.
MLA-referens (8:e uppl.)Não informado. Teaching Exceptional Children. Council for Exceptional Children, 1968.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.