McClure, Rhyder, author
Brady, 1989
Buku Teks
McClure, Rhyder, author
Brady, 1990
Buku Teks
Buser, Susanne, author
Elex Media Komputindo, 1992
Buku Teks
Stultz, Russell A., author
Wordware Publ, 1992
Buku Teks
Holt, Jack A., author
Richard D. Irwin , 1990
Buku Teks