@book{613763,
	author = {Maxfield, Michael G. and Babbie, Earl R.},
	title = {Basics of research methods for criminal justice and criminology /},
	publisher = {Thomson/Wadsworth,},
	year = {c2006.},
	address = {Belmont, CA :},
	url = {http://www.loc.gov/catdir/enhancements/fy1514/2005923996-b.html}
}