Hughes, Fredrick W.
Prentice-Hall, 1981
Buku Referensi
Hughes, Frederick W.
Elex Media Komputindo, 1990
Buku Teks
Gayakwad, Ramakant A.
Prentice-Hall, 2000
Buku Teks
Gayakwad, Ramakant A.
Prentice-Hall, 1983
Buku Teks
Jacob, J. Michael, author
Reston Publishing, 1982
Buku Teks