Universitas Indonesia, 1992
UI - Skripsi (Membership)
Universitas Indonesia, 1997
UI - Skripsi (Membership)
Universitas Indonesia, 1995
UI - Skripsi (Membership)
Universitas Indonesia, 1999
UI - Skripsi (Membership)
Universitas Indonesia, 1994
UI - Skripsi (Membership)