Christakis, Nicholas A. and Fowler, James H.  <br/><br/>
Connected  : how your friends' friends' friends affect everything you feel, think and do 
Christakis, Nicholas A. and Fowler, James H.  
 - 719th ed.  
 -   Back Bay Books  2011 
<br/><br/><label>Dewey Class. No.: </label>302.3  / T11 CHR.F