@book{3717,
	author = {Colton, Raymond H., and Casper, Janina K.,},
	title = {Understanding voice problems :},
	publisher = {Wolters Kluwer Health/Lippincott Williams & Wilkins,},
	year = {[2011], ©2011.},
	address = {Philadelphia :},
	edition = {Fourth edition.},
	url = {http://www.loc.gov/catdir/enhancements/fy1201/2010045739-d.html}
}