Wedderburn, Lord
Penguin Books, 1986
Buku Teks
edited by David Nice
Councils and Education Press, 1986
Buku Teks
Keenan, Denis T.
Pitman, 1970
Buku Teks
Bowers, John, 1956-
Blackstone Press, 1998
Buku Teks
Bowers, John, 1956-
Blackstone Press, 1996
Buku Teks