Grisworld, Ralph E.
Prentice-Hall, 1983
Buku Teks
LePage, Wilbur R., author
Prentice-Hall, 1978
Buku Teks
Tucker, Allen B., author
Holt Rinehart and Winston, 1983
Buku Teks
Holt, R.C., author
Reston Publishing, 1980
Buku Teks
Armstrong, Russell M., author
John Wiley & Sons, 1973
Buku Teks