Barrows, H. S. (1985). How to design a problem-based curriculum for the preclinical years. NY: Springer.
Blumenfeld, P. C., Soloway, E., Marx, R. W., Krajcik, J. S., Guzdial, M. & Palincsar, A. (1991). Motivating project-based learning: Sustaining the doing, supporting the learning. <i>Educational Psychologist</i>, <b>26</b> (3 & 4), 369-398.
Bransford, J. D., Brown, A. L., & Cocking, R. R. (Eds.) (1999). Learning and Transfer (Chap. 2). In <i>How People Learn: Brain, Mind, Experience, and School</i>. Washington, DC: National Academy Press.
Gray, J., Camp, P. J., & Holbrook, J. (2001). <i>Science talk as a way to assess student transfer and learning: Implications for formative assessment</i>, in preparation.
Hmelo, C. E., Holton, D. L., & Kolodner, J. L. (2000). Designing to Learn about Complex Systems. <i>Journal of the Learning Sciences</i>, <b>9</b> (3).