Concepts and method in social science: The tradition of giovanni sartori/ 
Collier, David [eds] 
 - New York:  Routledge,  2009. 
 - 368 p. 
<br/><br/><label>ISBN: </label>9780415775789 
<br/><br/><label>Dewey Class. No.: </label>300.1  / COL/C