Cavendish , 2003
Buku Teks
Cavendish Publishing Limited, 2002
Buku Teks
edited by Mark Howard, Roger Masefield ; assistant editor, Jason Chuah
Nexis Butterworths, 2006
Buku Teks
Slapper, Gary, author
Cavendish Publishing Limited, 2000
Buku Teks
Slapper, Gary
Routledge, 2010-2011
Buku Teks