Hudson, Alastair
Cavendish Publishing Limited, 2003
Buku Teks
Heydon, J.D.
Butterworth, 1993
Buku Teks
Penner, J. E. (James E.)
Oxford University Press, 2016
Buku Teks
Haley, Michael
Sweet and Maxwell, 2007
Buku Teks
Todd, Paul
London : Balckstone, 1994,
Buku Referensi