Understanding research methods for the behavioral sciences 
Gravetter, Frederick J. 
 - Second edition. 
 -  Cengage Learning Asia Pte, Ltd.  2014 
 - 564 pages 
<br/><br/>
<br/><br/><label>ISBN: </label>978-9-81435236-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Research -- Behavioral sciences.
<br/><br/><label>Dewey Class. No.: </label>001.4 G788 2014