Schaber, Gordon D., author
West Publishing, 1990
Buku Teks
Hinze, Jimmie W., author
McGraw-Hill, 2011
Buku Teks
Rohwer, Claude D., author
Thomson Reuters, 2010
Buku Teks
Murray, John Edward, author
Michie, 1990
Buku Teks
Calamari, John D., author
West Publishing, 1987
Buku Teks