Gunawan Widjaja
Forum Sahabat, 2008
Buku Teks
Ronaldie Christie
Fakultas Hukum Universitas Indonesia, 2007
UI - Tesis Membership
Vandekerckhove, Karen
Kluwer Law International, 2007
Buku Teks
Sihombing, Bernard Hasudungan Irianto
Universitas Indonesia, 2008
UI - Skripsi Open
Universitas Indonesia, 2005
UI - Skripsi Membership