Schuman, Howard <br/><br/>
Questions and answers in attitude surveys :   experiments on question form, wording and context 

 - California :   Sage Publications,   1996. 
 - 372 p. :   tbls. 
<br/><br/><label>ISBN: </label>0761903593 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ANTROPOLOGIA<br/>METODOLOGIA<br/>METODOS DE INVESTIGACION