At Home in Maine: Gifted Children and Homeschooling

Gallagher J.J. Teaching the gifted child. Boston: Allyn and Bacon, Inc., 1975, 1964, p.278.

Holt J. Teach your own. New York: Dell Publishing Co., Inc., 1981, p. 8–9.

Renzulli J.S. The enrichment triad model: A guide for developing defensible programs for the gifted and talented. Mansfield Center, Conn.: Creative Learning Press, Inc., 1977, p. 9, 11.