National Association for Gifted Children (U.S.) & Sternberg, R. J. (2004). Definitions and conceptions of giftedness. Corwin Press.
Chicago-viite (17. p.)National Association for Gifted Children (U.S.) ja Robert J. Sternberg. Definitions and Conceptions of Giftedness. Thousand Oaks, Calif.: Corwin Press, 2004.
MLA-viite (8. p.)National Association for Gifted Children (U.S.) ja Robert J. Sternberg. Definitions and Conceptions of Giftedness. Corwin Press, 2004.
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