Covey, Stephen R.,  <br/><br/>
7 habits of highly effective people :  powerful lessons in personal change / 
Stephen R. Covey. 
 - London :    Simon & Schuster,   2013. 
 - xxx, 391 pages : 
<br/><br/><label>ISBN: </label>9781471131820 
<br/><br/><label>Dewey Class. No.: </label>158.1 COV.S