1. Alao, S., & Guthrie, J. T. (1999). Predicting conceptual understanding with cognitive and motivational variables. The Journal of Educational Research, 92(4), 243–254.
2. Barrows, H. S. (1988). The tutorial process. Springfield, Illinois: Southern Illinois University School of Medicine.
3. Barrows, H. S. (1996). Problem-based learning in medicine and beyond: a brief overview. In L. Wilkerson & W. H. Gijselaers (Eds.), New directions for teaching and learning (Vol. 68, pp. 3–11). San Francisco: Jossey-Bass Publishers.
4. Collins, A., Brown, J. S., & Newman, S. E. (1989). Cognitive apprenticeship: Teaching the crafts of reading, writing, and mathematics. In L. B. Resnick (Ed.), Knowing, learning and instruction: Essays in honor of Robert Glaser. Hillsdale NJ: Lawrence Erlbaum Associates.
5. Davis, W. K., Nairn, R., Paine, M. E., Anderson, R. M., & Oh, M. S. (1992). Effects of expert and non-expert facilitators on the small-group process and on student performance. Academic Medicine, 67, 470–474.