Universitas Indonesia, 2001
UI - Skripsi (Membership)
Tambunan, J. Mangapul
Universitas Indonesia, 2002
UI - Tesis (Membership)
Universitas Indonesia, 2003
UI - Skripsi (Membership)
Silitonga, Desmon Roy B.
Universitas Indonesia, 2004
UI - Skripsi (Membership)
Universitas Indonesia, 2002
UI - Skripsi (Membership)