TY  - RPRT
TI  - A formative and summative evaluation model for special educational programs.
AU  - B U Philips
AU  - J M Mahan
AU  - R R Perry
PY  - 1976
DO  - 10.1097/00001888-197610000-00006
UR  - https://pubmed.ncbi.nlm.nih.gov/972374/
ID  - 972374
ER  -