Intermediate Microeconomics and its Application  : 
Walter Nicholson  
 - 6th ed. 
 - Philadelphia :  Dryden Press,  1994. 
 - xxix,722 p,;  ill. 
<br/><br/><label>ISBN: </label>0030748097 
<br/><br/><label>LC Class. No.: </label>HB171.5  / .N52 1994