Bailey,  Kenneth D <br/><br/>
Methods of Social Research. / 
Bailey,  Kenneth D. 
 - 4th ed 
 - New York::  The Free Press.,  1982. 
 - 588p;24cm 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>978 1 4165 7694 
<br/><br/><label>Dewey Class. No.: </label>301.072 BAI