Schermerhorn, John R., author
John Wiley & Sons, 1996
Buku Teks
Koontz, Harold, author
McGraw-Hill, 1984
Buku Teks
Hicks, Herbert G., author
McGraw-Hill, 1981
Buku Teks
Drucker, Peter F. (Peter Ferdinand), 1909-2005, author
Butterworth-Heinemann, 1974
Buku Teks
McFarland, Dalton E., author
Collier Macmillan, 1974
Buku Teks