Blank, Warren
The 108 skills of natural born leaders
[American Management Association, ], 2001
 eBooks
Mackoff, Barbara
The inner work of leaders : leadership as a habit of mind
American Management Association, 2001
 Buku Teks SO
Zenger, John H.
The Handbook for leaders: 24 lessons for extraordinary leadership
McGraw-Hill, 2003
 Buku Teks SO
Guide for team leaders in technical assistance projects
D.C. TAM , 1973
 Buku Teks SO
Zenger, John H.
The handbook for leaders: 24 lessons for extraordinary leadership
McGraw-Hill, 2004
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