CERTO, S. C. <br/><br/>
Supervision: Concepts and Skill-Building. 

 - 5th Ed. 
 - New York,  McGraw Hill,  2006. 
 - xxxii, 571p.: ill.; figure, table  Index  28cm 
<br/><br/><label>ISBN: </label>0-07-298752-2 
<br/><br/><label>Dewey Class. No.: </label>658.302 CER