Maddala G S <br/><br/>
Microeconomics: Theory and applications 
Maddala G S; Miller E 
 - New York  New York, McGraw-Hill book company  n.a. 
 - 634p 
<br/><br/><label>ISBN: </label>0-07-100220-0 
<br/><br/><label>Source: </label>Textbook