Schuman, Howard. <br/><br/>
Questions and answers in attitude surveys:    experiments on question form, wording and context/ 
Howard Schuman and Stanley Presser 
 - New York :  Academic Press,  NYo., c1981. 
 - 350p. 
<br/><br/><label>ISBN: </label>0-12-631350-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ciencias Sociales.
<br/><br/><label>Dewey Class. No.: </label>300.072  / S824q