Bryman, Alan <br/><br/>
Business Research Methods. 

 - 4th ed. 
 - United Kingdom ;  Oxford University Press,  2015. 
 - xv, 584 p.  27 cm. 
<br/><br/><label>ISBN: </label>978019874781 
<br/><br/><label>Dewey Class. No.: </label>658.072 B92b 2015