Hamers, Richard David, author
JOSSEY - BASS, 2007
Buku Teks
Ulrich, Dave
McGraw-Hill, 2013
Buku Teks
Harvard Bussiness School Press, 1990
Buku Teks
Terry, Robert W.
Jossey-Bass Publishers, 1994
Buku Teks
Blank, Warren, author
[American Management Association, ], 2001
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