Nguyễn Hải Phương 14 Tháng mười một 2017 https://diendan.hocmai.vn/threads/cong-bo-bai-du-thi-cuoc-thi-cay-but-tre-2017.646821/page-2#post-3277019
https://diendan.hocmai.vn/threads/cong-bo-bai-du-thi-cuoc-thi-cay-but-tre-2017.646821/page-2#post-3277019