Business Essentials / 
Ebert , Ronald J. [et..al] 
 - 5th ed. 
 - Toronto:  Pearson/Prentice Hall ,  2009. 
 - xxxi,483 p,: 
<br/><br/><label>ISBN: </label>9780132405751 
<br/><br/><label>LC Class. No.: </label>HD70  / .E223  2009