@book{159699,
	author = {Winker, Peter. and ebrary, Inc.},
	title = {Interviewers' deviations in surveys},
	publisher = {Peter Lang,},
	year = {c2013.},
	series = {Schriften zur empirischen Wirtschaftsforschung ;},
	address = {Frankfurt am Main :},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10666124}
}