Riordan, Rick. <br/><br/>
Percy Jackson and the battle of the Labyrinth. 

 - London :  Penguin Group,  2009. 
 - 341 p.  20 cm. 
<br/><br/><label>ISBN: </label>9780141321271 
<br/><br/><label>Dewey Class. No.: </label>813.54 RIO