Não informado. (1957). Gifted Child Quarterly. National Association for Gifted Children.
Citace podle Chicago (17th ed.)Não informado. Gifted Child Quarterly. Washington: National Association for Gifted Children, 1957.
Citace podle MLA (8th ed.)Não informado. Gifted Child Quarterly. National Association for Gifted Children, 1957.
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