@book{137891,
	author = {Tyson, William, and ebrary, Inc.},
	title = {Pitch perfect},
	publisher = {Stylus,},
	year = {2010.},
	address = {Sterling, Va. :},
	edition = {1st ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10545773}
}