Petersen H C <br/><br/>
Managerial economics 
Petersen H C; Lewis W C 
 - 2 
 - NY  NY, Macmillan  1990 
 - 745p 
<br/><br/><label>ISBN: </label>0-02-394851-5 
<br/><br/><label>Source: </label>Textbook