Universitas Indonesia, 2000
UI - Skripsi (Membership)
Universitas Indonesia, 2002
UI - Tesis (Membership)
Universitas Indonesia, 2000
UI - Skripsi (Membership)
Nasution, Sofina Indra
Universitas Indonesia, 2002
UI - Tesis (Membership)
Universitas Indonesia, 2003
UI - Tesis (Membership)