Wilson, J. F.
Sweet & Maxwell, 1957
Buku Teks
Anson, William R., Sir
Clarendon Press, 1947
Buku Teks
Brooks, Brian S.
Tax and Business Law Publishers, 1990
Buku Teks
Burton, Steven J., editor
West Publishing Co., 1995
Buku Teks
Murdoch, John
Spon Press, 2000
Buku Teks