APA (7e ed.) Bronvermelding
United States of America, Department of Health Education and Welfare. (1959). Preparation of a mentally retarded youth for gainful employment.
Chicago (17e ed.) Bronvermelding
United States of America, Department of Health Education and Welfare. Preparation of a Mentally Retarded Youth for Gainful Employment. 1959.
MLA (9e ed.) Bronvermelding
United States of America, Department of Health Education and Welfare. Preparation of a Mentally Retarded Youth for Gainful Employment. 1959.
Let op: Deze citaties zijn niet altijd 100% accuraat.