KOUZES, James M. - POSNER, Barry Z. The Leadership Challenge : How to Keep Getting Extraordinary Things Done in Organizations. 2. ed. San Francisco : Jossey-Bass Publ., 1995. 405 s. The Jossey-Bass management series. ISBN 0-7879-0269-1. [Copy count : 1, currently available 1, at library only 0]

KOUZES, James M. - POSNER, Barry Z. The Leadership Challenge : How to Get Extraordinary Things Done in Organizations. 1. ed. San Francisco : Jossey-Bass Publ., 1987. 362 s. The Jossey-Bass management series. ISBN 1-55542-211-X. [Copy count : 2, currently available 2, at library only 0]