Schonberger, Richard John
Business Publications, 1985
Buku Teks
Dilworth, James B., 1939-
McGraw-Hill, 1992
Buku Teks
Schonberger, Richard John
N.Y. The Free Press, 1986
Buku Teks
Meredith, Jack R.
John Wiley & Sons, 1987
Buku Teks
Meredith, Jack R.
John Wiley & Sons, 1984
Buku Teks