Riordan, Rick <br/><br/>
Percy Jackson and the olympians :  the demigod files / 
Rick Riordan. -- 
 - New York :  Disney Hyperion,  c2009. 
 - 151 pages :  18 cm. 
<br/><br/><label>ISBN: </label>9781423121664 
<br/><br/><label>Dewey Class. No.: </label>FIC R585d 2009