Okoth K. B. <br/><br/>
KLB Top Mark Series :  KCSE Revision Physics. 

 - 4th ed. 
 - Nairobi :  Kenya Literature Bereau,  2012. 
 - 336 p.  18 cm. 
<br/><br/><label>ISBN: </label>9789966656001 
<br/><br/><label>Dewey Class. No.: </label>500.540