Keir, D. L. (David Lindsay), author
Clarendon Press, 1967
Buku Teks
Barendt, E. M., author
Oxford University Press, 1998
Buku Teks
Kortmann, Constantijn A. J. M., author
Kluwer Law Internasional, 2000
Buku Teks
Mason, Alpheus Thomas,1899-1989, author
Prentice-Hall, 1993
Buku Teks
Barron, Jerome A., author
West, 2009
Buku Teks