Universitas Indonesia, 1997
UI - Skripsi (Membership)
Stepanus Sahala S.
Universitas Indonesia, 1999
UI - Tesis (Membership)
Universitas Indonesia, 2004
UI - Skripsi (Membership)
Universitas Indonesia, 2001
UI - Skripsi (Membership)
Universitas Indonesia, 2002
UI - Skripsi (Membership)