@book{120664,
	author = {Penrose, Roger. and ebrary, Inc.},
	title = {The road to reality},
	publisher = {A.A. Knopf,},
	year = {2005.},
	address = {New York :},
	edition = {1st American ed.},
	note = {Originally published: London : Jonathan Cape, 2004.},
	url = {http://site.ebrary.com/lib/strathmore/Doc?id=10235224}
}