Encyclopedia of leadership / 
George R. Goethals, Georgia J. Sorenson, James MacGregor Burns, editors 
 - Thousand Oaks, CA :  Sage Publications,  2004       
 - 4 v. 
<br/><br/><label>ISBN: </label>076192597X 
<br/><br/><label>LC Class. No.: </label>R HD 57.7 E56 2004