Gerring John <br/><br/>
Social science methodology    A critical framework.    

 - New York  Cambridge university press USA        2001 
 - xx, 300p.  cm. 
<br/><br/> Bib p 259-92. 
<br/><br/><label>ISBN: </label>0 521 80113 3 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social Science
<br/><br/><label>Dewey Class. No.: </label>Eb4, P1