@book{41898,
	author = {Saris, Willem E. and Gallhofer, Irmtraud N.},
	title = {Design, evaluation, and analysis of questionnaires for survey research /},
	publisher = {Wiley-Interscience,},
	year = {c2007.},
	address = {Hoboken, N.J. :},
	url = {http://www.loc.gov/catdir/toc/ecip079/2007001697.html}
}