Davies, Malcom, author
Longman, 1995
Buku Teks
by Andrew West [and others]
Fourmat Publishing, 1992
Buku Teks
Eddy Damian, author
Alumni, 1976
Buku Teks
Lewis, Merlin, author
Prentice-Hall, 1978
Buku Teks
Bohm, Robert M., author
McGraw-Hill , 2002
Buku Teks