Laksaman Media, compiler
Multicom Media Utama, 2008
Buku Teks
Matthews, Jeanna, author
John Wiley & Sons, 2005
Buku Teks
Khoe, Yao Tung, author
Dinastindo , 1995
Buku Teks
Butler, Mark, author
Ziff-Davis, 1994
Buku Teks
Irwin, author
2002
UI - Tesis Membership