@book{225223,
	author = {Walker, Samuel},
	title = {Sense and nonsense about crime, drugs, and communities},
	publisher = {Wadsworth},
	year = {c2011.},
	address = {Belmont, CA},
	edition = {7th ed.},
	url = {http://www.loc.gov/catdir/enhancements/fy1105/2010925062-b.html}
}