Kirkpatrick, D. L. (2008). Evaluating training programs: The four levels (third edition.). Berrett-Koehler Publishers, Inc.
Chicago Style (17th ed.) CitationKirkpatrick, Donald L. Evaluating Training Programs: The Four Levels. third edition. San Francisco, CA: Berrett-Koehler Publishers, Inc, 2008.
MLA (9th ed.) CitationKirkpatrick, Donald L. Evaluating Training Programs: The Four Levels. third edition. Berrett-Koehler Publishers, Inc, 2008.
Warning: These citations may not always be 100% accurate.