Boonreang, E. “The teaching management adaptation during the COVID-19 crisis: A case study of teachers in schools affiliated with the Ubon Ratchathani Provincial Administration Organization”. Local Administration Journal, vol. 16, no. 3, Sept. 2023, pp. 447-62, https://so04.tci-thaijo.org/index.php/colakkujournals/article/view/264651.