Customer Retention 
Customer Retention 
 -  "x, 285 p. ; hbk." 
 - New York  Arcler Press  2016 
<br/><br/><label>ISBN: </label>9781680942293 
<br/><br/><label>Dewey Class. No.: </label>658.812 BAB  / 22.658.812 BAB