O'Sullivan, Arthur. <br/><br/>
Economics :  principles and tools / 
Arthur O'Sullivan, Steven M. Sheffrin. 
 - 4th ed. 
 - Upper Saddle River, N.J. :  Pearson Prentice Hall,  c2006. 
 - xxxii, 814 p. :  ill., ports. ;  26 cm. 
<br/><br/> Previous ed.: c2003.  "International ed." 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0131968726 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics
<br/><br/><label>LC Class. No.: </label>HB171.5