Carrell, Michael R., author
Macmillan, 1992
Buku Teks
Straus, George, author
Prentice-Hall, 1967
Buku Teks
Mondy, R. Wayne, author
Prentice-Hall, 2010
Buku Teks
Mondy, R. Wayne, author
Prentice-Hall, 2002
Buku Teks
Arthur, Diane, author
American Management Association;, 2001
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