Gupta. G.S. <br/><br/>
Managerial Economics 

 - 1st. 
 - Delhi:  Tata Mc Graw -Hill Publishing . 
 - 271. 
<br/><br/><label>ISBN: </label>0-07-460126-1 
<br/><br/><label>Dewey Class. No.: </label> / GUP