Não informado. (1970). Child, Care Health and Development. Blackwell Scientific Publications.
Chicago-referens (17:e uppl.)Não informado. Child, Care Health and Development. Oxford, Inglaterra: Blackwell Scientific Publications, 1970.
MLA-referens (8:e uppl.)Não informado. Child, Care Health and Development. Blackwell Scientific Publications, 1970.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.