| 1 | Complete 101 collection Maxwell, John C | |
| 2 | Handbook for leaders : 24 lessons for extraordinary leadership Zenger, John H. | |
| 3 | Leadership in organizations Yukl, Gary A | |
| 4 | Leadership in organizations Yukl, Gary A | |
| 5 | Management : quality and competitiveness Ivancevich, John M |