1. (2002). The competency casebook. Amherst, MA, and Silver Spring, MD: HRD Press and International Society for Performance Improvement.
2. & (1995, January). Making competencies pay off. Training.
3. (1996). Human competence (2nd ed.). Silver Spring, MD: International Society for Performance Improvement.
4. A new model for systematic competency identification
5. An introduction to competency analysis and modeling