Agustinus Nalwan
Yogyakarta Andi 1997,
Buku Teks
Andi , 1999
Buku Teks
Gray, Daniel, author
Arizona Carolis, 1999
Buku Teks
Shelly, Gary B., author
Course Technology Cengage Learning, 2012
Buku Teks
Nelson, Stephen L., author
Elex Media Komputindo , 1996
Buku Teks