Tsun, Hang TEY
LexisNexis, 2011
Buku Teks
Bridge, Michael G.
Blackstone Press Limited, 1996
Buku Teks
Keeton, George W., 1902-1989
Sir Isaac Pitman and Sons, 1950
Buku Teks
Burke, Barlow
West Publishing, 1993
Buku Teks
Smith, Roger J.
Longman, 2000
Buku Teks