@book{45802,
	author = {Berg, Bruce L.},
	title = {Qualitative research methods for the social sciences /},
	publisher = {Allyn & Bacon,},
	year = {c2009},
	address = {Boston :},
	edition = {7th ed.},
	url = {http://www.loc.gov/catdir/toc/ecip0825/2008035856.html}
}