Thungthong, Pairin, and Kanchana Boonsong. “Factors Affecting Learning Loss of Students in the Situation of Covid -19 of Schools under Phetchaburi Primary Educational Service Area Office 2”. Journal for Developing the Social and Community 12, no. 3 (October 27, 2025): 71–92. accessed September 2, 2026. https://so03.tci-thaijo.org/index.php/rdirmu/article/view/292232.