Scambray, Joel, author
McGraw-Hill, 2008
Buku Teks
Somerson, Paul
Bantam Books , 1990
Buku Teks
Jamsa, Kris, author
Osborne McGraw-Hill, 1993
Buku Referensi
Stultz, Russell A., author
Elex Media Komputindo, 1994
Buku Teks
Simrin, Steven, author
Sams, 1993
Buku Referensi