Levitt, Steven D. <br/><br/>
Freakonomics : a rogue economist explores the hidden side of everything. 

 - New York :  Harper Collins Publishers,  2009. 
 - 315 p. ; 
<br/><br/><label>ISBN: </label>9780062312679 
<br/><br/><label>Dewey Class. No.: </label>330 LEV