@book{59934,
	author = {Berwick, Robert C. and ebrary, Inc.},
	title = {Birdsong, speech, and language},
	publisher = {MIT Press,},
	year = {c2013.},
	address = {Cambridge, Mass. :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10678823}
}