Artikel Jurnal
Keene, Michael
Kanisius, 2006
Buku Teks
Andreas, author
Fakultas Teknik Universitas Indonesia, 2004
UI - Skripsi Membership
[publisher not identified], [date of publication not identified]
Buku Klasik
S. Wismoady Wahono
BPK Gunung Mulia, 1990
Buku Teks