Chaffey, Dave and Ellis-Chawick, Fiona  <br/><br/>
Digital marketing  : strategy, implementation and practice  
Chaffey, Dave and Ellis-Chawick, Fiona  
 - 6th ed.  
 -   Pearson  2016 
<br/><br/><label>Dewey Class. No.: </label> / T16 CHA.E