Kirkpatrick, D. L., & Kirkpatrick, J. D. (2006). Evaluating training programs: The four levels (3rd ed.). San Fransisco: Berrett-Koehler Publishers Inc..
Chicago Style CitationKirkpatrick, Donald L., and James D. Kirkpatrick. Evaluating Training Programs: The Four Levels. 3rd ed. San Fransisco: Berrett-Koehler Publishers Inc., 2006.
MLA CitationKirkpatrick, Donald L., and James D. Kirkpatrick. Evaluating Training Programs: The Four Levels. 3rd ed. San Fransisco: Berrett-Koehler Publishers Inc., 2006.
Warning: These citations may not always be 100% accurate.