@book{81158,
	author = {Paul, Gregory S. and ebrary, Inc.},
	title = {The Princeton field guide to dinosaurs},
	publisher = {Princeton University Press,},
	year = {c2010.},
	series = {Princeton field guides},
	address = {Princeton :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10404084}
}