Não informado. (1957). Gifted Child Quarterly. National Association for Gifted Children.
Παραπομπή σε μορφή Chicago (17η εκδ.)Não informado. Gifted Child Quarterly. Washington: National Association for Gifted Children, 1957.
Παραπομπή σε μορφή MLA (8th εκδ.)Não informado. Gifted Child Quarterly. National Association for Gifted Children, 1957.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.