@book{155802,
	author = {Gray, John, and ebrary, Inc.},
	title = {J.S. Mill's On liberty in focus},
	publisher = {Routledge,},
	year = {1991.},
	series = {Routledge philosophers in focus series},
	address = {London ;},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10060950}
}