Frank, Robert H. <br/><br/>
Principles of Microeconomics / 
Robert H. Frank; Ben S. Bernannke 
 - 4. ed. 
 - New York  McGraw-Hill Education  2008. 
 - 421 p.  cm. 
<br/><br/><label>ISBN: </label>9780071285407 0071285407 
<br/><br/><label>LC Class. No.: </label>bF828p 2008