@book{112910,
	author = {Classen, Albrecht. and ebrary, Inc.},
	title = {Old age in the Middle Ages and the Renaissance},
	publisher = {Walter de Gruyter,},
	year = {c2007.},
	series = {Fundamentals of medieval and early modern culture ;},
	address = {Berlin ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10595989}
}