Covey, Stephen R <br/><br/>
Principle-centred leadership 

 - London :  Simon & Schuster  1992 
<br/><br/><label>ISBN: </label>068485841X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Leadership
<br/><br/><label>Universal Decimal Class. No.: </label>658.4092