@book{18204,
	author = {Gelfand, Stanley A.,},
	title = {Essentials of audiology /},
	publisher = {Thieme,},
	year = {c2007.},
	address = {New York :},
	edition = {2nd ed.},
	url = {http://www.loc.gov/catdir/toc/fy034/00054511.html}
}