Callegaro, Mario. <br/><br/>
Web survey methodology / 
Mario Callegaro, Katja Lozar Manfreda & Vasja Vehovar. 
 - xx, 318 pages :  illustrations ;  25 cm 
<br/><br/>Includes biblographical references (pages 268-299) and indexes. 
<br/><br/><label>ISBN: </label>9780857028600 (hardback) 9780857028617 (paperback) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet surveys.
<br/><br/><label>Dewey Class. No.: </label>001.433  / CAL 2015