Não informado. (1968). Annual Progress in Child Psychiatry and Child Development. Brunner Mazel.
Chicago-referens (17:e uppl.)Não informado. Annual Progress in Child Psychiatry and Child Development. New York: Brunner Mazel, 1968.
MLA-referens (8:e uppl.)Não informado. Annual Progress in Child Psychiatry and Child Development. Brunner Mazel, 1968.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.