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

 - New York :  Pockets Books,  1994 
 - 332. 
<br/><br/><label>ISBN: </label>0743468600  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Applied psychology
<br/><br/><label>Dewey Class. No.: </label>158.4  / COV