Leonard Edwin C. <br/><br/>
Supervision : Concepts And Practices Of Management / Raymond L. Hilgert Edwin C. Leonard Jr. 

 - 10th ed. 
 -  Cincinnati: Thomson South-Western C2007. 
 - XXX 634P.: COL. ILL. 24 CM. 
 -  0 .
<br/><br/><br/>ENG 
<br/><br/><label>ISBN: </label>0324536844 (Pbk) .