Slossberg, Lynn T.
West Legal Studies, 1999
Buku Teks SO
Marsh, Lucy Allen
Little, Brown and Company, 1992
Buku Teks SO
Burke, D. Barlow
Michie, 1993
Buku Teks
American Bar Association, 1974
Buku Teks
Anderson, Janette J.
Prentice-Hall, 1997
Buku Teks