@book{4399,
	author = {Hildegard, and Baird, Joseph L. and ebrary, Inc.},
	title = {The letters of Hildegard of Bingen.},
	publisher = {Oxford University Press,},
	year = {c1998.},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10278992}
}