Engineering economy / 
Sta. Maria, Hipolito B. 
 - 3rd ed. 
 - Mandaluyong City :  National Book Store,  2008. 
 - 154 p. ; 22.3cm 
<br/><br/><label>ISBN: </label>9710860313 
<br/><br/><label>Dewey Class. No.: </label>Fil 658.159 S775 2008