Dyfyniad APA

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.

Dyfyniad Arddull Chicago

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.

Dyfyniad MLA

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.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.