Riordan, Rick The last Olympian / Rick Riordan - New York : Hyperion Books, c2009. - 485 p. : ill., maps. ; 23 cm. - Percy Jackson & the Olympians ; bk. 5 . ISBN: 9781423101475 LCCN: Subjects--Topical Terms: MythologyGreekJuvenile fiction LC Class. No.: PZ7 / .R4829 2009 Dewey Class. No.: 823.914 / R585l