@book{81173,
	author = {Kryza, Frank T. and ebrary, Inc.},
	title = {The Power of light},
	publisher = {McGraw-Hill,},
	year = {2003.},
	address = {New York, N.Y. :},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10040267}
}