Silverman G <br/><br/>
Secrets of word-of-mouth marketing : how to trigger exponential sales through runaway word of mouth 
Silverman G And Others 
 - New York  New York, AMACOM  2001 
 - 258p 
<br/><br/><label>ISBN: </label>0-8144-7072-6 
<br/><br/><label>Source: </label>Textbook