Pakpahan, Normin S., author
Elips, 1996
Buku Teks
Hutagalung, Johannes Ronald Elyeser R., author
Fakultas Hukum Universitas Indonesia, 2009
UI - Tesis (Open)
Purba, Orinton, author
Universitas Indonesia, 2006
UI - Skripsi (Membership)
Buku Teks
Iskandar Mugni, author
Universitas Indonesia, 1984
UI - Skripsi (Membership)