EkwallE. C., & MilsonJ. L. (1980). When students can't read textbooks and lab manuals. School Science and Mathematics, 80,(2), 93–96.
2.
LambieR. A. (1980). A systematic approach for changing materials, instruction, and assignments to meet individual needs. Focus on Exceptional Children, 13(1), 1–12.
3.
LovittT. (1977). In spite of my resistance I've learned from children. Columbus, OH.: Charles E. Merrill.
4.
LovittT., & CurtissK. (1968). Effects of manipulating an antecedent event on mathematics response rate. Journal of Applied Behavior Analysis, 1, 329–333.