Barendt, E. M., author
Oxford University Press, 1998
Buku Teks
Kortmann, C.A.J.M., author
Kluwer Law International, 2007
Buku Teks
Heringa, A.W., author
Metro, 2009
Buku Teks
Kortmann, C. A. J. M.
Kluwer Law Internationa, 2007
Buku Teks
Stone, Geoffrey R.
Little, Brown and Company, 1991
Buku Teks