Levitt, Steven D. Freakonomics : a rogue economist explores the hidden side of everything / Steven D. Levitt and Stephen J. Dubner. - London : Penguin, 2006. - xv, 320 p ; 20 cm .Originally published: London: Allen Lane, 2005 .Includes index Includes bibliographical references ISBN: 9780141019017 Subjects--Topical Terms: Economics--Psychological aspects.Economics--Sociological aspects. Dewey Class. No.: 330 / LSF