phrommon, phunsak, Rattanakorn , S. and Saikham, S. (2022) “The Development of Student Ethics in Basic Educational Institutions, Sibunruang District, Nong Bua Lamphu Province”, Journal of Modern Learning Development, 7(5), pp. 355–365. available at: https://so06.tci-thaijo.org/index.php/jomld/article/view/255001 (accessed: 13 September 2026).