APA-Zitierstil (7. Ausg.)

Kirkpatrick, D. L., & Kirkpatrick, J. D. (2005). Evaluating training programs: The four levels (3rd ed.). Berrett-Koehler.

Chicago-Zitierstil (17. Ausg.)

Kirkpatrick, Donald L., und James D. Kirkpatrick. Evaluating Training Programs: The Four Levels. 3rd ed. San Francisco, Calif: Berrett-Koehler, 2005.

MLA-Zitierstil (9. Ausg.)

Kirkpatrick, Donald L., und James D. Kirkpatrick. Evaluating Training Programs: The Four Levels. 3rd ed. Berrett-Koehler, 2005.