Mehren, Arthur Taylor von
Kluwer law and Taxation Publishers, 1988
Buku Teks
Saunders, David, 1940-
Routledge, 1997
Buku Teks
Brown, Esther Lucile
Russell Sage Foundation, 1948
Buku Teks
edited by James C. Tuttle
American Bar Association, 1978
Buku Teks
Bogdan, Michael
Kluwer Norstedts Juridik Tano, 1994
Buku Teks