Empirical political analysis :  quantitative and qualitative research methods / 
Richard C. Rich, Craig Leonard Brians, Jarol B. Manheim and Lars Willnat. 
 - Ninth edition. 
 - pages cm 
<br/><br/> 'Eighth edition published by Routledge 2016'--T.p. verso. 
<br/><br/><label>ISBN: </label>9781138088764  RM910.50 (PTSL) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Political science--Research.