Ledford, Jerri L. <br/><br/>
Search engine optimization bible / 
Jerri L. Ledford 
 - 2nd ed. 
 - Indianapolis, IN :  Wiley Pub.,  c2009 
 - 507 p. :  ill. ;  24 cm. 
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>9780470452646 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Web search engines<br/>Web sites--Design<br/>Web sites--Ratings and rankings