Gomez-Mejia, Luis R.
Prentice-Hall, 1995
Buku Teks
Westerman, John
Bumi Aksara, 1989
Buku Teks
Arthur, Diane
American Management Association, 1995
eBooks
Jackson, Susan E.
South Westh Western College, 2000
Buku Teks
Greenlaw, Paul S.
Harper & Row, 1986
Buku Teks