Warner, W. Lloyd
Big business leaders in America
Harper & Brothers , 1955
 Buku Teks
Phillips, Jack J.
Beyond learning objectives: develop measurable objectives that link to the bottom line
American Society for Training & Development, 2008
 eBooks
Liautaud, Bernard, 1962-
e-Business intelligence : turning information into knowledge into profit
McGraw-Hill, 2000
 Buku Teks
Hatten, Timothy S.
Small business: entrepreneurship and beyond
Prentice-Hall, 1997
 Buku Referensi
Harvard business review on developing leaders
Harvard Business School Press, 2004
 Buku Teks