Chaffey, Dave <br/><br/>
Emarketing excellence  planning and optimizing your digital marketing 
By Dave Chaffey and P R Smith 
 - 4 ed.   
 - London  Routledge  2015 
 - xxi, : 613p.  
<br/><br/> Includes index  
<br/><br/><label>Dewey Class. No.: </label>658.872 CHA