Macroeconomics  Principles, Problems and Policies /  [electronic resource] : 
Campbell R. McConnell & Stanley L. Brue. 
 - 21st edition. 
 - 2 Penn Plaza, New York, NY 10121 :  McGraw-Hill Education,  c2018. 
<br/><br/><label>ISBN: </label>978-1-259-91567-3