Slossberg, Lynn T.
West Legal Studies, 1999
Buku Teks
Casner, A. James
Little, Brown and Company, 1979
Buku Teks
Porterfield, Gerald A., author
McGraw-Hill, c1995
Buku Teks
Chapin, F. Stuart (Francis Stuart), 1916-, author
University of Illinois Press, 1979
Buku Teks
Barnett, Jonathan, author
Westview Press, 1995
Buku Teks