Universitas Indonesia, 2003
UI - Skripsi Membership
Siahaan, Mabe, author
Universitas Indonesia, 2006
UI - Disertasi Membership
Universitas Indonesia, 2005
UI - Skripsi Membership
Universitas Indonesia, 1998
UI - Skripsi Membership
Universitas Indonesia, 2004
UI - Skripsi Membership