Bittel, Lester Robert
Executive skills program self-assessment tests
Alexander Hamilton Institute, 1986
 Buku Teks
Baldoni, John, 1952-
The leader's pocket guide: 101 indispensable tools, tips, and techniques for any situation
[American Management Association, ], 2013
 eBooks
Cadwell, Charles M.
Leadership skills for managers
[American Management Association, ], 2004
 eBooks
Bellows, Roger
Executive skills : their dynamics, and development
Prentice-Hall, 1962
 Buku Teks
Executive skills program checkpoint comprehention reviews Alexander Hamilton Institute
N.Y. AHI , 19-
 Buku Teks