@book{35663,
	author = {Brace, Ian, and ebrary, Inc.},
	title = {Questionnaire design},
	publisher = {Kogan Page,},
	year = {2008.},
	series = {Market research in practice series},
	address = {London ;},
	edition = {2nd ed.},
	url = {http://site.ebrary.com/lib/rucke/Doc?id=10250416}
}