Situmorang, Almuden
Fakultas Hukum Universitas Indonesia, 1985
UI - Skripsi (Membership)
Universitas Indonesia, 2005
UI - Skripsi (Membership)
Universitas Indonesia, 1996
UI - Skripsi (Membership)
Universitas Indonesia, 2009
UI - Skripsi (Open)
Simbolon, Parasian
Universitas Indonesia, 2000
UI - Skripsi (Membership)