@book{228491,
	author = {MacEvitt, Christopher Hatch, and ebrary, Inc.},
	title = {The crusades and the Christian world of the East},
	publisher = {University of Pennsylvania Press,},
	year = {c2008.},
	series = {The Middle Ages series},
	address = {Philadelphia :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10491904}
}