Universitas Indonesia, 1996
UI - Skripsi Membership
Universitas Indonesia, 2002
UI - Skripsi Membership
Universitas Indonesia, 2003
UI - Skripsi Membership
Tambunan, J. Mangapul, author
Universitas Indonesia, 2002
UI - Tesis Membership
Universitas Indonesia, 2002
UI - Skripsi Membership