Brigham, Eugene F., 1930-
The Dryden Press, 1990
Buku Teks SO
Koontz, Harold
McGraw-Hill, 1974
Buku Teks
Koontz, Harold
Tata McGraw-Hill, 1982
Buku Teks
Massie, Joseph L.
Prentice-Hall International, 1987
Buku Teks SO
Muller, Max
American Management Association, 2003
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