Sage Publications, 2002
Buku Referensi
Maureen, Cindy, author
Fakultas Teknik Universitas Indonesia, 2011
UI - Skripsi (Open)
Ediman Lukito, author
Elex Media Komputindo, 1995
Buku Teks
Artikel Jurnal
Lester, Paul Martin, author
Cengage Learning, 2014
Buku Teks