Edenborough, Michael
Cavendish Publishing, 1995
Buku Teks
Edenborough, Michael
Cavendish Publishing , 1994
Buku Teks
Thompson, Mark P.
Sweet & Maxwell, 1995
Buku Teks
Cornish, W.R. (William Rodolph), 1937-
Sweet and Maxwell, 2007
Buku Referensi
Thompson, Mark P.
Oxford University Press, 2001
Buku Teks