BETTS, P W. <br/><br/>
Supervisory Studies : A managerial Perpective. 

 - 5th edi. 
 - London.  EL/BS with Pitman.  1989 
 - viii, 550p 
<br/><br/><label>ISBN: </label>0 273 03440 5 
<br/><br/><label>Dewey Class. No.: </label>651.3