Kirkpatrick, D. L. (1998). Evaluating training programs: The four levels. San Francisco: Berrett-Koehler Publishers.
Chicago Style CitationKirkpatrick, Donald L. Evaluating Training Programs: The Four Levels. San Francisco: Berrett-Koehler Publishers, 1998.
MLA CitationKirkpatrick, Donald L. Evaluating Training Programs: The Four Levels. San Francisco: Berrett-Koehler Publishers, 1998.
Warning: These citations may not always be 100% accurate.