Kirkpatrick, Donald L. Evaluating training programs : the four levels / Donald L. Kirkpatrick and James D. Kirkpatrick - 3rd ed. - San Francisco, CA. : Berrett-Koehler Publishers, c2006 - xvii, 379 p. : ill. ; 24 cm. Includes bibliographical references and index ISBN: 1576753484 9781576753484 Subjects--Topical Terms: Employees--Training of--Evaluation