@book{48417,
	author = {Patton, Michael Quinn.},
	title = {How to use qualitative methods in evaluation /},
	publisher = {Sage Publications,},
	year = {c1987},
	address = {Newbury Park :},
	note = {Includes index.},
	url = {http://www.loc.gov/catdir/enhancements/fy0658/87021772-d.html}
}