@book{231029,
	author = {Miller, Richard, and ebrary, Inc.},
	title = {Securing baritone, bass-baritone, and bass voices},
	publisher = {Oxford University Press,},
	year = {2008.},
	address = {Oxford ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10215764}
}