Não informado. (1936). Child. Childrens Bureau, Department of Health, Education and Welfare.
Chicago-referens (17:e uppl.)Não informado. Child. Washington: Childrens Bureau, Department of Health, Education and Welfare, 1936.
MLA-referens (8:e uppl.)Não informado. Child. Childrens Bureau, Department of Health, Education and Welfare, 1936.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.