SCHUMAN,HOWARD. <br/><br/>
QUESTIONS AND ANSWERS IN ATTITUDE SURVEYS:EXPERMENTS ON QUESTION FORM, WORDING, AND CONTEXT 

 - LONDON,  SAGE PUBLICATION,  1996. 
<br/><br/><label>ISBN: </label>0-7619-0359-3 
<br/><br/><label>Dewey Class. No.: </label>300.723 SCH