References
- C.B.S. Statistisch Zakboek 1980, Den Haag: Staatsuitgeverij, 1980.
- Freeman, J. Gifted Children. Lancaster: MTP Press, 1980
- Gallagher, J. J. Teaching the Gifted Child. Boston (Mass.): Allyn and Bacon, 1975.
- Hardych, C. and Petrinovich, L. F. “Left-Handedness.” Psychological Bulletin, 1970, 84, 385–404.
- Hopkinson, D. The Education of Gifted Children. London: Woburn Press, 1978.
- Kathena, J. Educational Psychology of the Gifted. New York: John Wiley & Sons, 1982.