Smith, B.J., author
Longman, 1971
Buku Teks
Randall, Robert H.
London: Addison Wesley, 1951
Buku Teks
Temkin, Samuel
John Wiley & Sons, 1981
Buku Teks
Egan, David M., author
McGraw-Hill, 1972
Buku Teks
Cowan, James, author
McGraw-Hill, 2000
Buku Teks