Universitas Indonesia, 1995
UI - Skripsi (Membership)
Universitas Indonesia, 2005
UI - Skripsi (Membership)
Universitas Indonesia, 1996
UI - Skripsi (Membership)
Universitas Indonesia, 1990
UI - Skripsi (Membership)
Universitas Indonesia, 2001
UI - Skripsi (Membership)