Não informado. (2011). Education and Training in Developmental Disabilities. Council for Exceptional Children, Division on Developmental Disabilities.
Chicago-Zitierstil (17. Ausg.)Não informado. Education and Training in Developmental Disabilities. Arlington, Va: Council for Exceptional Children, Division on Developmental Disabilities, 2011.
MLA-Zitierstil (8. Ausg.)Não informado. Education and Training in Developmental Disabilities. Council for Exceptional Children, Division on Developmental Disabilities, 2011.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.