Christakis, Nicholas A. and Fowler, James H. <br/><br/>
Connected: the surprising power of our social networks and how they shape 

 -  Back Bay Books  2009 
<br/><br/><label>ISBN: </label>9780316036139 
<br/><br/><label>Dewey Class. No.: </label>302.3  / T09 CHR.F