Elkington, John, 1949- The power of unreasonable people : how social entrepreneurs create markets that change the world / John Elkington, Pamela Hartigan. - Boston, Mass. : Harvard Business School Press, c2008. - xviii, 242 p. ; 25 cm. Includes bibliographical references and index. ISBN: 9781422104064 1422104060 LCCN: 2007030382 Nat. Bib. No.: GBA795192 bnb Nat. Bib. Agency Control No.: 014407715 Uk Subjects--Topical Terms: Social entrepreneurship.Social change. LC Class. No.: HD60 / .E45 2008 Dewey Class. No.: 361.7068/8