Rick Riordan. <br/><br/>
The Demigod Diaries / 
Rick Riordan. 
 - London :  Puffin Books,  2013. 
 - 242 p. ;  19 cm. 
<br/><br/><label>ISBN: </label>9780141344379 
<br/><br/><label>Dewey Class. No.: </label>F RIO/O