Llewelyn, David, author
Marshall Cavendish Business, 2010
Buku Teks
Bainbridge, David, author
Pearson - Longman, 2002
Buku Teks
McJohn, Stephen M., 1959-, author
Wolters Kluwers, 2015
Buku Teks
edited by Adam Mossoff, professor of law, editor; George Mason, University School of Law, Virginia, USA, editor
Edward Elgar, 2013
Buku Teks
Edenborough, Michael, author
Cavendish Publishing , 1994
Buku Teks