Schwartz, Bernard, author
Little, Brown & Co., 1976
Buku Teks
Sathe, SP, author
Lexis Nexis, 2009
Buku Teks
Endicott, Timothy, author
Oxford University Press, 2015
Buku Teks
Foulkes, David, 1924-, author
Butterworth, 1990
Buku Teks
Scheb, John M., author
Thomson Wadworth, 2005
Buku Teks