Hussey, David E., author
Pergamon Press, 1976
Buku Teks
Soriane, Emmanuel V., author
Sintag-Tala, 1987
Buku Teks
Glueck, William F., author
McGraw-Hill, 1980
Buku Teks
Lasserre, Phillippe, author
Singapore Institute of Management, 1986
Buku Teks
Harvard Business School , 2000
Buku Teks