TY  - BOOK
AU  - Kirkpatrick, Donald L.
TI  - The four levels of evaluation : : measurement & evaluation / 
SN  - 9781562864842
PY  - 2007///
CY  - Alexandria
PB  - ASTD Press, 
KW  - Employees Training of Evaluation
KW  - Personnel Formation Évaluation
N1  - "Tips, tools, and intelligence for trainers."
ER  -