Sipper, Daniel
McGraw-Hill , 1997
Buku Teks
Dilworth, James B., 1939-, author
McGraw-Hill, 1992
Buku Teks
Biegel, John E., author
Prentice-Hall, 1980
Buku Teks
O`Donnell, Paul D., author
Prentice-Hall, 1954
Buku Teks
Riggs, James L., author
John Wiley & Sons, 1970
Buku Teks