Drucker, Peter F. <br/><br/>
Management :   tasks, responsibilities, practices / 
Peter F. Drucker. 
 - 1st  Edition. 
 - New York:   Routledge,  2011. 
 - 575p.: 
<br/><br/><label>ISBN: </label>9780750643894 
<br/><br/><label>Dewey Class. No.: </label>658 DRU.M