Artikel Jurnal
McCormack, Mark H., author
Abdi Tandur, 1997
Buku Teks
Naiborhu, Charles, author
Universitas Indonesia, 2002
UI - Skripsi (Membership)
Nuziwar, author
Universitas Indonesia, 2011
UI - Skripsi (Open)
Clara Andriani, author
2016
UI - Skripsi (Membership)