Certo, Samuel <br/><br/>
Supervision :  concepts and skill-building / 
Samuel Certo. 
 - 9th ed. 
 - New York :McGraw - Hill Education :  McGraw - Hill Education,  2016. 
 - 567 p. : col. ill. : 28 cm. 
<br/><br/> Includes appendix, glossary and index. 
<br/><br/><label>ISBN: </label>978-1-25-925409-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Supervision of employee