@book{33687,
	author = {Howells, Richard, and ebrary, Inc.},
	title = {Using visual evidence},
	publisher = {McGraw Hill/Open University Press,},
	year = {2009.},
	address = {Maidenhead, Berkshire ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10347072}
}