@book{36641,
	author = {Kangas, Sini. and ebrary, Inc.},
	title = {Authorities in the Middle Ages},
	publisher = {Walter de Gruyter,},
	year = {2013.},
	series = {Fundamentals of medieval and early modern culture,},
	address = {Berlin :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10728971}
}