Universitas Indonesia, 2010
UI - Skripsi (Open)
Kindangen, Henry Yoseph
2013
UI - Tesis (Membership)
Koemolontang, B.Z.
Universitas Indonesia, [Date of publication not identified]
Buku Teks
Universitas Indonesia, 1999
UI - Skripsi (Membership)
Pasaribu, Evi Riyanti
Universitas Indonesia, 2008
UI - Skripsi (Membership)