Bellows, Roger
Executive skills : their dynamics, and development
Prentice-Hall, 1962
 Buku Teks
Hague, Hawden
Executive self-development real learning in real situations
Macmillan, 1974
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Barner, Robert
Bench strength: developing the depth and versatility of your organization's leadership talent
American Management Association;;, 2006
 eBooks
Harvard business review on breakthrough leadership
by Daniel Goleman ... [and others]
Harvard Business School Press, 2001
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Harvard business review on leadership at the top
Harvard Business School, 2003
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