Phillips, Jack J. Costs and ROI: evaluating at the ultimate level/ Jack J. Phillips, Lizette Zúñiga. - San Francisco: Jossey-Bass; Pfeiffer, c2008. - xxi, 144 pages; 23 cm. - The measurement and evaluation series ; 5 . Includes bibliographical references and index. ISBN: 978-0-7879-8721-3 Subjects--Topical Terms: Employees --Training --Cost effectiveness Employees --Training --Evaluation Dewey Class. No.: DC 658.3124 / P54c