Riordan, Rick. Percy Jackson and the sea of monsters / Rick Riordan. - London : Puffin, 2006. - 279 p. ; 24 cm. - Percy Jackson and the Olympians. 2 . ISBN: 1423103343 Nat. Bib. No.: GBA633310 bnb Subjects--Topical Terms: Gods, Greek--Juvenile fiction. Dewey Class. No.: 813.54