1. A reformulation of the problem of associations.
2. Differential engagement of self-reactive influences in cognitive motivation
3. Barrows, H. S. & T,arnblyn, R. M. (1980). Problem-based learning: An approach to medical education. New "York: Springer.
4. Belmont, J . M., Butterfield, E. C. & Ferretti, R. P. (1982). To secure transfer of training instruct self-management skills.In D. K. Detterman & R. J. Sternberg (Eds.), How and how much can intelligence be increased? (pp. 147-154). Norwood, NJ: Ablex.
5. Bransford, J. D. (1987). Enhancing thinking and learning.San Francisco: Freeman.