Ahuja, Hira N., author
John Wiley & Sons, 1980
Buku Teks
Neil, James M., author
Prentice-Hall, 1982
Buku Teks
Hackney, John W., author
John Wiley & Sons, 1965
Buku Teks
Cubit, Harry T., author
McGraw-Hill, 1981
Buku Teks
Pulver, H.E.
New York: McGraw-Hill, 1969
Buku Teks