Schaber, Gordon D., author
West Publishing, 1990
Buku Teks
Maraist, Frank L., author
West Publishing, 1996
Buku Teks
Rohwer, Claude D., author
Thomson Reuters, 2010
Buku Teks
Kionka, Edward J., author
Thomson Reuters, 2010
Buku Teks
Duxbury, Robert, author
Sweet and Maxwell, 1997
Buku Teks