Não informado. (1957). Gifted Child Quarterly. National Association for Gifted Children.
Chicago-viite (17. p.)Não informado. Gifted Child Quarterly. Washington: National Association for Gifted Children, 1957.
MLA-viite (8. p.)Não informado. Gifted Child Quarterly. National Association for Gifted Children, 1957.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.