Bibliografi : hlm. 219-225 No. Inv. : 146245-146246/P/Perp/15/2c
Bibliografi : hlm. 251-256
Judul asli : "Save our Earth series"
No Inv.: 143436-143438/P/Perp/14/3c
No Inv.: 138444-138448/P/Perp/14/5c
No Inv.: 109409/S/Perp/07/1c~114258-114260/P/Perp/08/3c~116497-116499/P/Perp/09/3c~116468-116470/P/Perp/09/3c~120781/S/Perp/09/1c~129964/SM/Perp/11/1c
No Inv.: 111556-111558/P/Perp/07/3c
No Inv.: 113251-113254/P/Perp/08/4c~120926/SM/Perp/09/1c~139480-139482/P/Perp/14/3c