Survey methodology / 
Robert M. Groves ... [et al.]. 
 - 2nd ed. 
 - Hoboken, N.J. :  Wiley,  c2009. 
 - xxi, 461 p. : 
<br/><br/><label>ISBN: </label>9780470465462 (paper) 0470465468 (paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Surveys<br/>Social surveys<br/>Social sciences