Varian, Hal R. <br/><br/>
Intermediate Micro economics :   A Modern Approach. 

 - 7th Ed. 
 - London :  W. W. Norton & Company,  1987. 
 - xxiv, 715 p. 
<br/><br/><label>ISBN: </label>0393927024 
<br/><br/><label>Dewey Class. No.: </label>339  / VAR