Sayeed, Khalid B.
Oxford University Press, 1968
Buku Teks
Biswas, B. N.
Oxford & IBH Publishing Co., 1988
Buku Teks
Pound, Roscoe, author
Little, Brown, 1938
Buku Teks
Khalid M. Hussain
Dewan Bahasa dan Pustaka , 1992
Buku Teks
Burns, Russell W., author
Institution of Engineering and Technology, 2004
eBooks