@book{ title = {Percy Jackson & the Olympians.}, author = {Riordan, Rick}, editor = {998032514908896 - Percy Jackson and the Olympians Hardcover Boxed Set - 1 - }, editor = {The lightning thief - }, editor = {Età: dai 9 ai 14 anni }, year = {2005}, address = {New York }, publisher = {Hyperion}, }