Sudman, Seymour <br/><br/>
Asking questions / 
Seymour Sudman and Norman M. Bradburn 
 - San Francisco  :  Jossey-Bass,  1982 
 - 397 p. ;  23 cm. 
<br/><br/><label>ISBN: </label>0875895468 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research<br/>Questionnaires