BAHAN KAJIAN 2,3 DAN 4 DALAM LINK BERIKUT https://online.flipbuilder.com/ngwxz/lqtp/ https://online.flipbuilder.com/ngwxz/nbjf/ https://online.flipbuilder.com/ngwxz/wuvp/ https://online.flipbuilder.com/ngwxz/oknq/ PHOTO: