Graham, Ian S.
John Wiley & Sons, 1995
Buku Referensi
Tittel, Ed., author
IDG Books, 1995
Buku Teks
Fuller, Robert, author
McGraw-Hill , 2002
Buku Teks
Hyman, Michael l., author
IDG Books Worldwide, Inc., 1997
Buku Teks
Ray, Deborah S., author
IDG Books Worldwide, 1996
Buku Teks