Martins, Cesar Melito Dos Santos, author
Universitas Indonesia, 2010
UI - Tesis (Open)
Pinto, Julio Tomas, author
Etiss, 2007
Buku Teks
editor, Poltak Partogi Nainggolan
P3DI DPR RI, 2008
Buku Teks
Artikel Jurnal
Ahmad Hidayat, author
2018
UI - Skripsi (Membership)