TY  - RPRT
TI  - Planning an evaluation and estimating its cost.
AU  - J J Card
AU  - C Greeno
AU  - J L Peterson
PY  - 1992
DO  - 10.1177/016327879201500105
UR  - https://pubmed.ncbi.nlm.nih.gov/10117744/
ID  - 10117744
ER  -