@book{121462,
	author = {Blumstein, Alfred,},
	title = {The crime drop in America /},
	publisher = {Cambridge University Press,},
	year = {2006.},
	series = {Cambridge studies in criminology },
	address = {New York :},
	edition = {Revised edition},
	url = {http://www.loc.gov/catdir/enhancements/fy0659/2005055304-d.html}
}