Tourangeau, Roger (ed) et.al. <br/><br/>
Hard to survey populations 

 - UK  Cambridge University Press  2014 
 - xxv, 648 
<br/><br/><label>ISBN: </label>9781107628717 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Demographic survey<br/>Research methodology<br/>Social survey