Bibliografi : hlm. 341-345
No Inv.: 124656/P/Perp/10/1c~138442/P/Perp/14/1c
No Inv.: 1232-1251/Perp/89/20c
No Inv.: 617/S/Perp/93/1c~4991-4994/P/Perp/97/4c~410-412/S/00/3c
No Inv.: 2108-2116/P/Perp/92/9c~13757-13760/P/Perp/92/4c~220/P/Perp/98/1c~110194/S/Perp/07/1c~110194/PH/Perp/07/1c
Judul asli : "The Extension Worker`s Companion and Reading Book"
No Inv.: 103216/PSM/Perp/05/1c~104275-104279/P/Perp/06/5c~108588-108590,108592/P/Perp/06/4c~109869/PH/Perp/07/1c~119931-119933/P/Perp/09/3c
No Inv.: 914-917/BD/Perp/86/4c
No Inv.: 111385-111388/P/Perp/08/4c~117632-117634/P/Perp/09/3c~120027-120029/P/Perp/09/3c