Principles of macroeconomics/ 
Robert H. Frank [and three others] 
 - Seventh edition 
 - New York:  McGraw Hill,   2019. 
 - xxviii, 490 pages:  illustrations;  28 cm. 
<br/><br/> Includes glossary and index. 
<br/><br/><label>ISBN: </label>9781260098792 
<br/><br/><label>LC Class. No.: </label>Circ HB 172.5 .P75 2019