Churchill, R.R., author
Manchester University Press, 1992
Buku Teks
edited by Samir Mankabady
A.W. Sijthoff, 1978
Buku Teks
Plavers, Anthony
Butterworth Asia, 1996
Buku Teks
Woon, Walter C. M., author
Prentice-Hall, 2000
Buku Teks
Tan Sook Yee, author
Butterworth Asia, 2001
Buku Teks