1. , . Medical innovations: a diffusion study. Indianapolis: Bobbs-Merrill, 1966.
2. Diffusion of innovation. 4th Ed. New York: The Free Press, 1995.
3. The adult learning projects: a fresh approach to theory and practice in adult learning. Toronto: Ontario Institute for Studies in Education, 1971.
4. , , eds. Change and learning in the lives of physicians. New York: Prager, 1989.
5. New research agendas for CME: Organizing principles for the study of self-directed curricula for change