Tampubolon, Hamonangan, author
Universitas Indonesia, 2000
UI - Skripsi Membership
Kloan Klede Jaya, [date of publication not identified]
Buku Teks
Pustaka Tinta Mas, T.t
Buku Teks
Nova Tantannie, author
Fakultas Hukum Universitas Indonesia, 2009
UI - Skripsi Open
Fokusmedia, 2004
Buku Teks