Levitt, Steven D. Freakonomics : a rogue economist explores the hidden side of everything / Steven Levitt and Stephen J. Dubner. - London : Allen Lane, 2005. - xii, 242 p. ; ill. ;. 24 cm. : Includes bibliographical references. ISBN: 0713998067 Subjects--Topical Terms: Economics--Psychological aspects.Economics--Social aspects. Dewey Class. No.: 330 LE FR