Não informado. (1966). Education and Training of the Mentally Retarded. Council for Exceptional Children, Division on Mental Retardation.
Chicago (17e ed.) BronvermeldingNão informado. Education and Training of the Mentally Retarded. Reston, Va: Council for Exceptional Children, Division on Mental Retardation, 1966.
MLA (8e ed.) BronvermeldingNão informado. Education and Training of the Mentally Retarded. Council for Exceptional Children, Division on Mental Retardation, 1966.
Let op: Deze citaties zijn niet altijd 100% accuraat.