Yusuf, Hakeem O., author
Routledge, 2010
Buku Teks
Beck, Robert J., author
Routledge, 1993
Buku Teks
edited by Michael Zurn, Andre Nollkaemper and Randall Peerenboom
Cambridge University Press, 2012
Buku Teks
Grob, Fritz, author
Yale University Press, 1949
Buku Klasik
Thomas A.J.A. Vandamme
Europa Law Publishing, 2001
Buku Teks