Riordan, Rick. <br/><br/>
Heroes of Olympus:  The House of Hades / 
Rick Riordan. 
 - London:  Puffin Books,  2014. 
 - 597 p.  20 cm. 
 - Heroes of Olympus.  4. .
<br/><br/><label>ISBN: </label>9780141339207 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mythology. Giants. Hades (greek deity) Quests. Voyages to  the otherworld.