Christakis, Nicholas. <br/><br/>
Connected :  the amazing power of social networks and how they shape our lives/ 
Nicholas A. Christakis and James H. Fowler. 
 - London:  HarperCollins,  2011. 
 - xiii, 338 p., [8] p. of plates :  col. ill. ;  20 cm. 
<br/><br/>Includes bibliographical references (p. 311-326) and index. 
<br/><br/><label>ISBN: </label>9780007303601 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social networks