Artikel Jurnal
Wang, Thomas C., author
Erlangga, 1999
Buku Teks
[publisher not identified], [date of publication not identified]
Naskah
Framadhana Arnely, author
Fakultas Ilmu Komputer Universitas Indonesia, 2006
UI - Skripsi (Membership)
Panjaitan, Yohanna Ameilya, author
Fakultas Hukum Universitas Indonesia, 2013
UI - Skripsi (Membership)