Kuper, Adam
Routledge, 1996
Buku Teks
Davies, Douglas, 1942-
The Guilford Press, 2004
Buku Teks
Ritter, Lennart
Kluwer Law International, 1991
Buku Teks
Fietta, Stephen
Oxford University Press, 2016
Buku Teks
Clements, John, 1946-
John Wiley & Sons, 1994
Buku Teks