Benson, Rowland S., author
Pergamon Press, 1979
Buku Teks
Lichty, Lester Clyde
McGraw-Hill book company, inc., 1939.
Buku Teks
John Wiley & Sons, 1982
Buku Teks
editor, Sudhir Singhal
Tata McGraw-Hill, 1992
Buku Referensi
Pulkrabek, Willard W., author
Prentice-Hall, 2004
Buku Teks