Lipsey, Richard. <br/><br/>
Economics / 
Richard Lipsey, Alec Chrystal. 
 - 11th ed. 
 - Oxford :  Oxford University Press,  2007. 
 - xxii, 665 p. 
<br/><br/><label>ISBN: </label>0199568421 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economics.