Economics / 
Richard Lipsey , Alec Chrystal . 
 - 13th ed. 
 - UK;  Oxford university press,  2015. 
 - xiii,612 p.:  ill.; 
<br/><br/><label>ISBN: </label>9780198746577 
<br/><br/><label>LC Class. No.: </label>HB171.5  / .E276 2015