HAYES, David K. - ZACCARELLI, Brother Herman E. Training managers to train : a practical guide to improving employee performance. rev. ed. Menlo Park : Crisp Publications, Inc., 1996. 88 s. A fifty-minute series book. ISBN 1-56052-411-1. [Počet ex. : 1, z toho voľných 1, prezenčne 0]