Lewis, John, author
Addison-Wesley, 1998
Buku Teks
Tucker, Allen B., author
Holt Rinehart and Winston, 1983
Buku Teks
Cooper, James W., author
John Wiley & Sons, 1981
Buku Teks
Gehani, Narain, 1947-, author
Prentice-Hall, 1989
Buku Teks
Rice, John K., author
Holt, Rinehart and Winston , 1973
Buku Teks