Barry Rodger, editor
Kluwer Law International , 2013
Buku Teks
Keir, D. L. (David Lindsay), author
Clarendon Press, 1967
Buku Teks
Jaffe, Louis L., author
Little, Brown, 1968
Buku Teks
Cooper, Simon, author
Blackstone Press, 1997
Buku Referensi
Smith, Roger J., author
Longman, 2000
Buku Teks