Stamps: A Stimulus for the Gifted Student

Bloom B.S. (1956). Taxonomy of educational objectives. New York: David McKay.

Flack J.D. Feldhusen J.F. (1983). Future studies in the curricular framework of the Purdue three-stage model, G/C/T, 21, 2–9.

Terman L.M. (1968). Genetic studies of genius; volume 1: Mental and physical traits of a thousand gifted children, (2nd ed.). Stanford, Ca: Stanford University Press.