4Richard M R. Edward L D. Intrinsic and Extrinsic Motivations:Classic Definitions and New Directions. In:Contemporary Educational Psychology, 2000, ( 25 ) : 54 - 67.
8Guilford, J. P. 1967. The nature of human intelligence. New York: McGmw-Hin.
9Taylor, C. W. Questioning and creating: a model for curriculum reform. The Journal of Creative Behavior,1967,1(1), 22-33.
10Williams, F. E. A Total Creativity Program for Individualizing and Humanizing the Learning Process Englewood Cliffs,NJ: Educational Technology Publications, 1972.
