Worato-Tata, P., C. P. Chumnian Pollaharn, and K. Duangchatom. “Model of Moral Development According to the Royal for Education of Students in Phrapariyattidham School, Maha Sarakham Province”. Journal for Developing the Social and Community, vol. 10, no. 2, Aug. 2023, pp. 137-60, https://so03.tci-thaijo.org/index.php/rdirmu/article/view/261884.