Black Hillel . "The Scandal of Educational Testing." Saturday Evening Post, November 9, 1963, 72-76.
2.
Drews, Elizabeth M. "A Critical Evaluation of Approaches to the Identification of Gifted Students." In. A. Traxler (Ed.) Measurement in Today's Schoots. Washington, D. C.: American Council on Education, 1961. Pp. 47-51.
3.
Getzels, J.W. and P.W. Jackson.Creativity and Intelligence. New York : Henry Holt and Sons, 1962.
4.
Sommers, W.S. "The Influence of Selected Teaching Methods on the Development of Creative Thinking." Doctoral Dissertation, University of Minnesota , 1961.