1. Gibson J, Ivancevich J, Donnelly J. Organizations: Behavior, Structure, Process, 8th ed., Burr Ridge, IL: Richard D. Irwin, Inc.; 1994:261.
2.
2. Kouzes J, Posner B. The Leadership Challenge: How to Keep Getting Extraordinary Things Done in Organizations, 2nd ed., San Francisco: Jossey-Bass; 1995:304.