TY  - BOOK
AU  - Powell,Guy R.
TI  -  ROI of $ocial media : :  how to improve the return on your social marketing investment / 
SN  -  9780470827413 (hbk.)
AV  - HF 5415.1265 .P69 2011 
PY  - 2011///
CY  -  Singapore : 
PB  -  John Wiley & Sons (Asia), 
N1  -  Includes bibliographical references (p. 279) and index
ER  -