B1:
https://tuyengiao.vn/van-hoa-xa-hoi/xa-hoi/phe-duyet-de-an-tang-cuong-cong-tac-quan-ly-chat-thai-nhua-o-viet-nam-136001
http://tapchimoitruong.vn/phap-luat--chinh-sach-16/tang-cuong-cong-tac-quan-ly-chat-thai-nhua-tai-viet-nam-25755
https://vtv.vn/xa-hoi/phe-duyet-de-an-tang-cuong-cong-tac-quan-ly-chat-thai-nhua-o-viet-nam-20210723152755835.htm
b2:
http://baonamdinh.com.vn/channel/5086/202202/cac-cap-hoi-nong-dan-tham-gia-bao-ve-moi-truong-2549273/index.htm
http://www.hanoimoi.com.vn/tin-tuc/Xa-hoi/1024684/xay-dung-534-mo-hinh-nong-dan-tham-gia-bao-ve-moi-truong
http://phuninh.phutho.gov.vn/thong-tin-tuyen-truyen/bai-viet/cat/nong-thon-moi-1440/id/hoi-nong-dan-cac-cap-trong-huyen-phu-ninh-tich-cuc-tham-gia-bao-ve-moi-truong-93559
b3:
https://baotintuc.vn/xa-hoi/tang-cuong-kiem-soat-o-nhiem-moi-truong-bien-bai-1-hien-trang-moi-truong-bien-20210919104656347.htm
https://www.thiennhien.net/2019/11/29/moi-truong-bien-viet-nam-bai-1-o-nhiem-va-suy-thoai-gia-tang/