Rachel Koh
Page one publishing pte ltd, 2010
Buku Teks
Montague, John, author
John Wiley & Sons, 2010
Buku Teks
Helms, Michael E., author
Prentice-Hall, 1990
Buku Referensi
Rani, Ruzaimi Mat, author
Page one , 2010
Buku Teks
Schmidt, Engineering Otto
German: Laipzig, 1963
Buku Teks