Pindyck R S <br/><br/>
Micro economics 
Pindyck R S; Rubinfeld D L 
 - New York  New York, Macmillan Pub. co.  1989 
 - 688p 
<br/><br/><label>ISBN: </label>0-02-946023-9 
<br/><br/><label>Source: </label>Textbook