Krugman Paul R <br/><br/>
International economics: Theory and policy 
Krugman Paul R; Obstfeld Maurice 
 - 3 
 - New York  New York, Harper Collins  1994 
 - xxix,795 
<br/><br/><label>ISBN: </label>0-673-52300-4 
<br/><br/><label>Source: </label>Textbook