Berdine, W.H., & Cagelka, P.T.1980. Teaching the trainable retarded. Columbus , Oh.: Charles E. Merrill.
2.
Copeland, Richard W.1972. How children learn mathematics: Teaching implications of Piaget's research. New York: MacMillan.
3.
Creekmore, W.N.The relationship between development of visual preference and selected affective responses in normal infants (Doctoral dissertation, University of North Carolina at Chapel Hill, 1979). Dissertation Abstracts International , 1980, 40, 4523A. (University Microfilms No. 80-05, 027)
4.
Lloyd, J.Academic instruction and cognitive behavior modification: The need for attack strategy training. Exceptional Education Quarterly , 1, 1980.
5.
Meichenbaum, D.Cognitive behavior modification with exceptional children: A promise yet unfilled . Exceptional Education Quarterly, 1, 1980.