Levitt, Steven D. Freakonomics : a rogue economist explores the hidden side of everything / Steven D. Levitt & Stephen J. Dubner. - New York : Penguin book, 2015 - xxvi, 315 p. ; 21 cm. "With new material, including an author Q & A" -- Cover. Includes bibliographical references and index. ISBN: 9780141019017 LCCN: 2009417561 Subjects--Topical Terms: Economics--Psychological aspects.Economics--Sociological aspects. LC Class. No.: HB74.P8 / L479 2009 Dewey Class. No.: 330 / LEF 2015