Buchanan, Andrew Hamilton
John Wiley & Sons, 2001
Buku Teks
Kline, Rex B.
The Guiford Press, 2005
Buku Teks
Roytman, M. Ya
New Delhi: Amerind, 1975
Buku Teks
Jos, Mullie
The Bureau of Engraving and Printing, 1932
Buku Teks
Rupp, Bernhard, auhtor
Garland Science, 2010
Buku Teks