TY  - RPRT
TI  - Lessons learned from teaching web-based courses: the 7-year itch.
AU  - Cynthia G Johnson
DO  - 10.1111/j.1744-6198.2005.00002.x
UR  - https://pubmed.ncbi.nlm.nih.gov/15839840/
ID  - 15839840
ER  -