Reuschlein, Harold Gill, author
St. Paul Minn, 1990
Buku Teks
Drake, Charles D.
Sweet & Maxwell, 1972
Buku Teks
J. Dennis Hynes
West Publshing Co, 1997
Buku Teks
Eisenberg, Melvin A., author
The Foundation Press, 1987
Buku Teks
Hynes, J. Dennis, author
Michie , 1996
Buku Teks