Chaibubpha พ., and Mankong ช. “Guidelines for the Development of Distance Learning through Information Technology of Schools under The Secondary Education Service Area Office 7 in New Normal Era”. Mahachula Academic Journal, vol. 8, no. 3, Dec. 2021, pp. 177-91, https://so04.tci-thaijo.org/index.php/JMA/article/view/249500.