Pardosi, Mico
Dua Selaras, 2003
Buku Referensi
Graver, Robert T., author
Prentice-Hall, 2002
Buku Teks
lambert, Nevin, author
Elex Media Komputindo , 2001
Buku Teks
Alderman, Eric, author
McGraw-Hill, 1988
Buku Teks
Donny Gunawan, author
Elex Media Komputindo, 1990
Buku Teks