Council for Exceptional Children. Division on Mental Retardation and Developmental Disabilities. (1994). Education and training in mental retardation and developmental disabilities. Council for Exceptional Children, Division on Mental Retardation.
Παραπομπή σε μορφή Chicago (17η εκδ.)Council for Exceptional Children. Division on Mental Retardation and Developmental Disabilities. Education and Training in Mental Retardation and Developmental Disabilities. Reston, Va: Council for Exceptional Children, Division on Mental Retardation, 1994.
Παραπομπή σε μορφή MLA (9th εκδ.)Council for Exceptional Children. Division on Mental Retardation and Developmental Disabilities. Education and Training in Mental Retardation and Developmental Disabilities. Council for Exceptional Children, Division on Mental Retardation, 1994.