Siahaan, Henock Pandapotan
2006
UI - Tesis (Membership)
Universitas Indonesia, 2002
UI - Skripsi (Membership)
Universitas Indonesia, 2002
UI - Skripsi (Membership)
Pintaulim Davina W.
2012
UI - Tesis (Open)
Universitas Indonesia, 2003
UI - Skripsi (Membership)