@book{3410,
	author = {Irwin, David and Pannbacker, Mary H.},
	title = {Clinical research methods in speech-language pathology and audiology /},
	publisher = {Plural Pub.,},
	year = {c2008.},
	address = {San Diego :},
	url = {http://www.loc.gov/catdir/toc/ecip0715/2007014299.html}
}