Universitas Indonesia, 1996
UI - Skripsi (Membership)
Universitas Indonesia, 1984
UI - Skripsi (Membership)
Universitas Indonesia, 1988
UI - Skripsi (Membership)
Silalahi, Rismauly
Universitas Indonesia, 1991
UI - Skripsi (Membership)
Januar Merel
2011
UI - Skripsi (Open)