Todd, David Keith, author
John Wiley & Sons, 1959
Buku Teks
Kashef, Abdel Aziz Ismail
McGraw-Hill, 1986
Buku Teks
Wong, J.Y.
John Wiley & Sons, 1978
Buku Teks
Fleddermann, Charles B., author
Pearson Prentice Hall, 2004
Buku Teks
Kingsley, Charles, author
Dutton, 1949
Buku Teks