Não informado. (1957). Gifted Child Quarterly. National Association for Gifted Children.
Chicago-referens (17:e uppl.)Não informado. Gifted Child Quarterly. Washington: National Association for Gifted Children, 1957.
MLA-referens (8:e uppl.)Não informado. Gifted Child Quarterly. National Association for Gifted Children, 1957.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.