Kreangsak Khampira, Jongkonklang D, Pilanthananond D. Learning Package Development on New Normal Safety for Lower Secondary Students. GS KKU HS [internet]. 2022 May 1 [cited 2026 Oct. 1];10(1):34-4. available from: https://so04.tci-thaijo.org/index.php/gskkuhs/article/view/253418