@book{91018,
	author = {Bayley, David H. and ebrary, Inc.},
	title = {Changing the guard},
	publisher = {Oxford University Press,},
	year = {2006.},
	series = {Studies in crime and public policy},
	address = {New York :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10142470}
}