Janthong K, Duangchatom K. The Development Guideline for Moral and Ethics of Students Schools under Surin Primary Educational Service Area Office 3: The Development Guideline for Moral and Ethics of Students Schools under Surin Primary Educational Service Area Office 3. rtnb [internet]. 2023 Apr. 30 [cited 2026 Jan. 7];5(1):398-411. available from: https://so07.tci-thaijo.org/index.php/rtnb/article/view/2689