@book{1659,
	author = {Punch, Keith F.},
	title = {Introduction to social research :},
	publisher = {SAGE Publications,},
	year = {c1998.},
	address = {London:},
	edition = {Rep.},
	note = {Includes bibliographical references (p.295-308) and index.},
	url = {http://www.loc.gov/catdir/enhancements/fy0656/98061492-d.html}
}