Weston, Martin
Berg Publishers, 1993
Buku Teks
Dadomo, Cristian
Sweet and Maxwell, 1996
Buku Teks
by Andrew West [and others]
Fourmat Publishing, 1992
Buku Teks
Howarth, David A.
Blackstone Press, 1992
Buku Teks
Slapper, Gary
Cavendish Publishing, 1999
Buku Teks