Pongpoj, Chanidapa, and Sunthorn Kohtbantau. 2022. “Opinion of Educational Personnel toward Student Development Activities at Ban Bung Ngao School under the Jurisdiction of Maha Sarakham Primary Educational Service Area Office 2”. Journal for Developing the Social and Community 9 (3). Bangkok, Thailand:107-16. https://so03.tci-thaijo.org/index.php/rdirmu/article/view/256326.