Mentor Encyclopaedia Grade 1 :  Competency Based Curriculum,  
Mentor Publishers.  
 - 2nd edition.  
 - Nairobi  :  Mentor Publishers.   2022 . 
 - ii ,83 p . ;  col.illustrations .  21.3 cm . 
<br/><br/><label>ISBN: </label>978-9966-012-203 
<br/><br/><label>Dewey Class. No.: </label>030