Jantsch, John. <br/><br/>
The referral engine :  teaching your business how to market itself / 
John Jantsch. 
 - New York :  Portfolio,  2010. 
 - 243 p. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>9781591843115 (hbk.)  RM99.95 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business referrals.<br/>Viral marketing.<br/>Word-of-mouth advertising.