1. and , On-Demand Instruction with the World Wide Web. Paper presented at the Interactive 96, Atlanta, May 12–13, 1996.
2. , and , Handbook on Formative and Summative Evaluation of Student Learning. New York: McGraw Hill, 1971.
3. “The Internet and You,” Training and Development, June 1995, pp. 67–70.
4. and , Constructivism and the Technology of Instruction. Hillsdale, NJ: Lawrence Erlbaum Associates, 1992.