Nyaga , Michael  K. <br/><br/>
Inventor Secondary Business Studies  .  Form Four Students' Book.  
Kenya Literature Bureau.  
 - 3rd edition.  
 - Nairobi. :  Kenya Literature Bureau  .  2005 
 - 215 pages .  col.illustrations .  17 cm . 
<br/><br/><label>ISBN: </label>978-9966-65-388-3 
<br/><br/><label>Dewey Class. No.: </label>650