1. Epstein, H. T. (1978). Growth spurts during brain development: Implications for educational policy and practice. InEducation and the brain. Chicago: University of Chicago Press.
2. Haubenstricker, J. L., & Seefeldt, V. (1974). Sequential progression in fundamental motor skills of children with learning disabilities. Paper presented at the International Conference of the Association for Children with Learning Disabilities, Houston, TX.
3. Havighurst, R. (1948).Developmental tasks and education. Chicago: University of Chicago Press.
4. Hebb, D. (1949).The organization of behavior. New York: John Wiley & Sons.
5. Illingworth, (1980). Developmental variations in relation to minimal brain dysfunction. In H. E. Rie & E. D. Rie (Eds.),Handbook of minimal brain dysfunction, a critical view pp. 522–566. New York: John Wiley & Sons.