Sapsford, Roger. <br/><br/>
Survey research. 

 - 2nd ed. 
 - London :  Sage Publications,   2007. 
 - xiii, 276 p. :   ill. ;   25 cm. 
<br/><br/><label>ISBN: </label>1412912326 . 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Survey.
<br/><br/><label>Dewey Class. No.: </label>001.42 SAP