Morgan, Chris
Berlin: Springer-Verlag, 1984
Buku Teks
Sharon, D., author
Elex Media Komputindo, 1992
Buku Teks
Simons, Geoffrey L.
England: The National Computing Centre, 1980
Buku Teks
Lammineur, P.
Pergamon Press, 1984
Buku Teks
McGraw-Hill Book Comp., 1988
Buku Teks