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Harvard Business School Press , 1994
Buku Teks
Stallard, Michael Lee, author
VA ATD Press, 2015
Buku Teks
McGrath, James, author
McGraw-Hill, 2001
Buku Teks
Evans, Nicholas D.
Prentice-Hall, 2002
Buku Teks
Callon, Jack D.
McGraw-Hill Companies, 1996
Buku Teks