Riordan , Rick Percy Jackson and the lightning thief / Rick Riordan - London : Puffin Books , ©2005, 2010. - 374 pages ; 2 unnumbered pages : 20 cm - . ISBN: 9780141329994 (paperback) Index Terms--Genre/Form: Youth FictionAdventure StoriesFantasy fiction Dewey Class. No.: ETF RIOR