Berger, Jonah <br/><br/>
Contagious: How to build word of mouth in the digital age 

 - London  Simon & Schuster   2013 
 - 244p. 
<br/><br/><label>ISBN: </label>9781471111709 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Product Selling
<br/><br/><label>Dewey Class. No.: </label>658.81  / BER