Certo, Samuel C. <br/><br/>
Supervision :  concepts and skill-building 6th ed. 
Certo, Samuel C. 
 - Boston :   Mcgraw-Hill/Irwin,  c2008. 
 - xxx, 573 pages :  colored illustration ;  25 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>978-0-07-128673-2. 
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>Circ. 658.3 C418s 2008