Babbie, Earl R., <br/><br/>
The Basics of Social Research : 

 -  Cengage Learning,  2010. 
 - 576 pages 
<br/><br/><label>ISBN: </label>9780495812241 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social Science.
<br/><br/><label>Dewey Class. No.: </label>300.072  / BAB