Elkington, John. <br/><br/>
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. :  ill. ;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>9781422104064 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social change.<br/>Social entrepreneurship.