M.J. Gunn
Sweet and Maxwell, 1996
Buku Teks
Slapper, Gary
Routledge, 2010-2011
Buku Teks
Howarth, David A.
Blackstone Press, 1992
Buku Teks
Slapper, Gary, author
Cavendish Publishing, 1999
Buku Teks
Kiralfy, A.K.R.
Sewwt & Maxwell Limited, 1960
Buku Teks