Barakso, Maryann <br/><br/>
Understanding Political science research methods  the challenge of inference 
Maryann Barakso 
 - Schaffner, Brian F. 
 - New York  Routledge  2014 
 - xvi,233p. 
<br/><br/><label>ISBN: </label>9780415895200  P 33.99