Empirical political analysis :  Quantitative and qualitativeresearch methods / 
Jarol B. Manheim ... [et al.]. 
 - 7th ed. 
 - New York :  Pearson/Longman,  2008. 
 - 445 p. :  ill. ;  25 cm. 
<br/><br/>Includes bibliogr. references and index. 
<br/><br/><label>ISBN: </label>0205576400 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Political science--Research.
<br/><br/><label>Dewey Class. No.: </label>320.072