Dixon, Martin
Buku Teks
Corman, Calvin W., author
Little,Brown and Company, 1983
Buku Teks
Koch, Charles H.
The Michie Company, 1997
Buku Teks
Hutley, F.C. (Francis Charles)
Law Book, Co., 1975
Buku Teks
Schlesinger, Rudolf B.
The Foundation Press, 1950
Buku Teks