Certo, Samuel C. <br/><br/>
Supervision :  concepts and skill-building / 
Samuel C. Certo. 
 - 8th ed. 
 - New York :  McGraw-Hill Irwin,  c2013. 
 - xxviii, 596 p. : 
<br/><br/><label>ISBN: </label>9780078029189 (alk. paper) 
<br/><br/><label>Dewey Class. No.: </label>658  / CER