Druker P F <br/><br/>
Frontiers of management : where tomorrows decisions are being shaped todya 
Druker P F 
 - London  London, Heinemann  1986 
 - 379p 
<br/><br/><label>ISBN: </label>0 434 90349 9 
<br/><br/><label>Source: </label>Textbook