APA Edition Citation

Kirkpatrick, D. L., & Kirkpatrick, J. D. (2006). Evaluating training programs : the four levels / Donald L. Kirkpatrick and James D. Kirkpatrick: The four levels (3rd ed.). Berrett-Koehler.

Chicago Edition Citation

Kirkpatrick, Donald L., and James D. Kirkpatrick. Evaluating Training Programs : The Four Levels / Donald L. Kirkpatrick and James D. Kirkpatrick: The Four Levels. 3rd ed. San Francisco, CA: Berrett-Koehler, 2006.

MLA Edition Citation

Kirkpatrick, Donald L., and James D. Kirkpatrick. Evaluating Training Programs : The Four Levels / Donald L. Kirkpatrick and James D. Kirkpatrick: The Four Levels. 3rd ed. Berrett-Koehler, 2006.