Nimmer, Raymond T.
The Michie Company, 1992
Buku Teks
Whaley, Douglas J.
Little, Brown & Co., 1993
Buku Teks
Braucher, Robert, author
Foundation Press, 1953
Buku Teks
Emanuel, Steven, author
Emanuel Law Outlines, 1988
Buku Teks
Henson, Ray D.
St. Paul Minn, 1979
Buku Teks