Jansen, Jim <br/><br/>
Understanding sponsored search :  core elements of keyword advertising / 
Jim Jansen 
 - Cambridge :  Cambridge University Press,  2011 
 - xix, 277 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9781107011977 (hbk.) 9781107628366 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Internet advertising<br/>Internet searching<br/>Keyword searching<br/>Search engines