TY  - RPRT
TI  - AN EXPERIMENT IN PROGRAMMED LEARNING.
AU  - J M FOY
PY  - 1965
DO  - 10.1111/j.2042-7158.1965.tb07689.x
UR  - https://pubmed.ncbi.nlm.nih.gov/14324463/
ID  - 14324463
ER  -