Não informado. Programs for the Handicapped. Office for the Handicapped, Department of Health, Education and Welfare.
Chicago-referens (17:e uppl.)Não informado. Programs for the Handicapped. Washington: Office for the Handicapped, Department of Health, Education and Welfare.
MLA-referens (8:e uppl.)Não informado. Programs for the Handicapped. Office for the Handicapped, Department of Health, Education and Welfare.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.