Brown, L. Neville (Lionel Neville), author
Clarendon Press, 1998
Buku Teks
Andersen, William R., author
Carolina Academic Press, 2010
Buku Teks
Jain, MP , author
LexisNexis, 2011
Buku Teks
Clancey, Richad, author
Sweet & Maxwell, 2011
Buku Teks
Schwartz, Bernard, author
Pitman, 1950
Buku Teks