KIRKPATRICK. (1998). Evaluating training programs: The four levels (2nd ed.). San Francisco: Berrett-Koehoer Pub..
Chicago Style CitationKIRKPATRICK. Evaluating Training Programs: The Four Levels. 2nd ed. San Francisco: Berrett-Koehoer Pub., 1998.
MLA CitationKIRKPATRICK. Evaluating Training Programs: The Four Levels. 2nd ed. San Francisco: Berrett-Koehoer Pub., 1998.
Warning: These citations may not always be 100% accurate.