Thongphubate, T., N. Ninlabun, M. Sisanga, T. Chotientip, W. Maneephruek, and P. Tepsud. “Learning through actual situations of the sufficiency economy learning center for secondary school students”. Journal for Developing the Social and Community, vol. 9, no. 3, Sept. 2022, pp. 27-46, https://so03.tci-thaijo.org/index.php/rdirmu/article/view/260175.