Howell, Rate A., author
Dryden Press, 1984
Buku Teks
Buergenthal, Thomas
Syracuse University Press, 1969
Buku Teks
Wolfgang Schon, Kai A. Konrad, editors
[Springer-Verlag, ], 2012
eBooks
Buku Teks
Dolan, John F., author
Aspen Law & Business , 1997
Buku Teks