"Seng, Teh Keng" <br/><br/>
New Syllabus Math Book - 1 6Th Edn. 

 - Karachi  Open University Press  2009 
 - 420 
<br/><br/><label>ISBN: </label>9780195979958 
<br/><br/><label>Dewey Class. No.: </label>510  / T 577