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

 - London :   Simon,   1991. 
<br/><br/><label>ISBN: </label>0743468600 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English
<br/><br/><label>Dewey Class. No.: </label>422  / COV