Martinus Nijhoff, 1968
Buku Teks
Cambridge University Press, 2017
eBooks
Brown, Kenneth, author
Charles Darwin University Press, 2005
Buku Teks
Putu Maharaja Segara Putra, author
Fakultas Hukum Universitas Indonesia, 2020
UI - Skripsi Membership
Romero, Flerida Ruth P., author
U.P. Law Center, 1981
Buku Teks