Kirkpatrick, J. D., & Kirkpatrick, W. K. (2016). Kirkpatrick's four levels of training evaluation. Alexandria, Virginia: Association for Talent Development.
Chicago Style CitationKirkpatrick, James D., and Wendy Kayser Kirkpatrick. Kirkpatrick's Four Levels of Training Evaluation. Alexandria, Virginia: Association for Talent Development, 2016.
MLA CitationKirkpatrick, James D., and Wendy Kayser Kirkpatrick. Kirkpatrick's Four Levels of Training Evaluation. Alexandria, Virginia: Association for Talent Development, 2016.
Warning: These citations may not always be 100% accurate.