Poh, Chu Chai, author
LexisNexis, 2011
Buku Teks
Chorley, Lord, author
Sir Isaac Pitman & Sons, 1960
Buku Teks
Hamblin, Clive, author
Sweet & Maxwell, 1985
Buku Teks
Hales, Michael G.
Prentice-Hall, 198
Buku Teks
edited by Mark Howard, Roger Masefield ; assistant editor, Jason Chuah
Nexis Butterworths, 2006
Buku Teks