Elliot, Catherine, author
Longman , 2001
Buku Teks
Duxbury, Robert, author
Sweet and Maxwell, 1997
Buku Teks
McKendrick, Ewan, author
Macmillan, 1994
Buku Teks
Nababan, Tonggo Piona Marito, author
Fakultas Hukum Universitas Indonesia, 2017
UI - Skripsi (Membership)
Shofia Shobah, author
Fakultas Hukum Universitas Indonesia, 2019
UI - Tesis (Membership)