@book{71838,
	author = {Williams, Malcolm. and May, Tim, and ebrary, Inc.},
	title = {Introduction to the philosophy of social research},
	publisher = {UCL Press,},
	year = {c1996.},
	series = {Social research today ;},
	address = {London :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10057653}
}