Cappeletti, Mauro
The Bobbs - Merrill Company,INC, 1979
Buku Teks
D. J. Galligan.(Denis James), 1947-, editor
Oxford University Press, 2014
Buku Teks
Barak, Aharon, author
Cambridge University Press, 2012
Buku Teks
Amadeo, Santos P.
Columbia University Press, 1943
Buku Teks
Williams, Jerre S.
West Publishing Company, 1979
Buku Teks