Powell, Guy R. <br/><br/>
ROI of $ocial media :    how to improve the return on your social marketing investment /  
  ROI of social media   Return of investment of social media 
Guy Powell, Steven Groves, Jerry Dimos. 
 - Singapore :    John Wiley & Sons (Asia),    c2011. 
 - xviii, 289 p. :    ill. ;    24 cm. 
<br/><br/>Includes bibliographical references (p. 279) and index. 
<br/><br/><label>ISBN: </label>9780470827413 (hbk.) 
<br/><br/><label>LC Class. No.: </label>HF 5415.1265 .P69 2011