Gerring, John <br/><br/>
Social Science Methodology: a unified framework/ 
John Gerring. 
 - Second edition. 
 - New York:  Cambridge Univ Press;  2012. 
 - xxv, 495 pages.:  illustrations;  25 cm. 
<br/><br/><label>ISBN: </label>9780521132770  Paperback (pbk) 
<br/><br/><label>Subjects--Topical Terms: </label>--Social Sciences- Methodology
<br/><br/><label>Dewey Class. No.: </label>300.72 GERR