Crawford, Daniel J., author
John Wiley & Sons, 1990
Buku Teks
Malik, C.P.
Kalyani Publisher, 1982
Buku Teks
Gates, Frank C.
McGraw-Hill , 1949
Buku Teks
E. Boer, editor
Backhuys Publishers, 2000
Buku Teks
editors, M. Brink, R.P. Escobin
Backhuys , 2003
Buku Teks