Betts, P. W. <br/><br/>
Supervisory management / 
P. W. Betts. 
 - 6th edition. 
 - London :  Pitman Publishing,  1993. 
 - ix, 422 pages :  illustrations ;  25 cm. 
<br/><br/>Includes bibliographical and index. 
<br/><br/><label>ISBN: </label>0273600575 
<br/><br/><label>Subjects--Personal Names: </label><br/>Supervision of employees.