RYAN, Kathleen D. - OESTREICH, Daniel K. - ORR III, George A. The Courageous Messenger : How to Successfully Speak Up at Work. 1. ed. San Francisco : Jossey-Bass Publ., 1996. 275 s. The Jossey-Bass Business and Management Series. ISBN 0-7879-0268-3. [Počet ex. : 1, z toho voľných 0, prezenčne 1]