Hal R. Varian - <br/><br/>
Intermediate Microeconomics: A Modern Approach 

 - 3rd ed 
 -   W.W Norton & Company, New York  1993 
<br/><br/><label>ISBN: </label>9780393963205  0 
<br/><br/><label>Dewey Class. No.: </label>338.5/VAR