Bernard, H. Russell <br/><br/>
Social research methods 

 - 2nd 
 - Los Angeles  Sage  2013 
 - xxxiii, 789 
<br/><br/><label>ISBN: </label>9781412978545 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Social sciences- research- methodology
<br/><br/><label>Dewey Class. No.: </label>300.72  / B49S