TY  - RPRT
TI  - Does problem-based learning work? A meta-analysis of evaluative research.
AU  - D T Vernon
AU  - R L Blake
PY  - 1993
DO  - 10.1097/00001888-199307000-00015
UR  - https://pubmed.ncbi.nlm.nih.gov/8323649/
ID  - 8323649
ER  -