Schonberger, Richard John, author
Business Publications, 1985
Buku Teks
Stevenson, William J., author
McGraw-Hill, 2005
Buku Teks
Dilworth, James B., 1939-, author
McGraw-Hill, 1996
Buku Teks
Meredith, Jack R., author
John Wiley & Sons, 1987
Buku Teks
Meredith, Jack R., author
John Wiley & Sons, 1984
Buku Teks