Samuelson, P. A Nordhaus, W. D. <br/><br/>
Economics 

 - 18 
 - New Delhi  Tata McGraw-Hill  2009 
 - p.776 
<br/><br/><label>ISBN: </label>9780070598553 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Microeconomics<br/>International Trade
<br/><br/><label>Dewey Class. No.: </label>330 S187E