Ulrich, Dave
McGraw-Hill, 2013
Buku Teks
Hamers, Richard David, author
JOSSEY - BASS, 2007
Buku Teks
Harvard Business School
Harvard Business Review Press, 2011
Buku Teks
Zenger, John H., author
McGraw-Hill, 2004
Buku Referensi
Mackoff, Barbara, author
American Management Association, 2001
Buku Teks