Maher, F.K.H. (Francis Kevin Heathcote), author
Law Book Company, 1971
Buku Teks
Berch, Michael A., author
West, 2010
Buku Teks
Jones, Harry W., author
The Foundation Press, 1980
Buku Teks
Hall, Kermit L., author
Oxford University Press, 1991
Buku Teks
Leslie, Douglas L., author
Little, Brown and Company, 1981
Buku Teks