1. Iowa nurses' attitudes toward mandatory continuing education;Arneson;Journal of Continuing Education in Nursing,1985
2. Summary and emerging issues;Brennan,1990
3. Brennan B (1987): Survey of continuing professional education. In Dymock DR (Ed.): Proceedings of the Continuing Professional Education Conference of the University of New England. Armidale NSW, pp. 107–109.
4. Recertification as an effort to raise the competence of Lawyers: Issues, trends and predictions;Bushman,1979
5. Implementing and evaluating professional education: Elements of a strategy;Campbell;Physiotherapy Canada,1983