1W. Porter. Mayo,Michaelb. DonneUy. Characteristics of the ideal Problem-based learning tutor in clinical medicine, Evaluation & the Health Professions, Vol 18 No 2,June 1995 page 124-136.
2Willem S De Grave, Diana H J M Dolmans, Cees P M van der Vleuten, Tutor intervention profile: reliability and validity. Medical Education 1998,32,page 262-268.
3BARROW H S.The Tutorial Process[M].Springfield,IL:Southern Illinois University School of Medicine,1992.
4HMELO C E,COTE N C.The Development of Self-directed Learning Strategies in Problem-based Learning[C].Proceedings of International Conference of the Learning Sciences.Charlottesville,VA:Association for the Advancement of Computing in Education,1996:421-426.
