Covey, S <br/><br/>
Principle centered leadership 

 - New York :  Simon And Schuster,  1991. 
 - 334 
<br/><br/><label>ISBN: </label>0-671-79280-6 
<br/><br/><label>Subjects--Topical Terms: </label><br/>General 
<br/><br/><label>Dewey Class. No.: </label>420.84  / COV