Bittel, Lester Robert, author
Executive skills program self-assessment tests
Alexander Hamilton Institute, 1986
 Buku Teks
Bellows, Roger, author
Executive skills : their dynamics, and development
Prentice-Hall, 1962
 Buku Teks
Smilansky, Jonathan, author
Developing executive talent : best practices from global leaders
Wiley ; San Francisco, CA : Jossey-Bass, 2007
 Buku Teks
Bender, James F., author
The technique of executive leadership
McGraw-Hill, 1950
 Buku Teks
Mason, Joseph G.
How to be a more creative executive / Joseph G. Mason
McGraw-Hill Book , 1960
 Buku Teks
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