8http://chemeng.mcmaster.ca/pbl/pbl.htm.Problem-based Learning,especially in the context of large classes. 被引量：1
9http://www.mcli.dist.maricopa.edu/pbl/info.html. An Overview of PBL. 16-May-01:10:35 AM. 被引量：1
10Duch, B. J. et al. (2001)The power of problem-based learning: A Practical "How to" for Teaching Undergraduate Courses in Any Discipline. Sterling, Va.: Stylus, 47-55. 被引量：1
