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
American Bar Association, 1978
Buku Teks
Bogdan, Michael
Kluwer Norstedts Juridik Tano, 1994
Buku Teks