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.
Cytowanie według stylu Chicago (wyd. 17)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.
Cytowanie według stylu MLA (wyd. 9)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.