เวทะนา พอนสี, อาจแก้ว จุไรรัตน์, and ศรีจำนงค์ จุฑามาส. “The development a causal model of mathematics achievement of Mathayomsomboon Sueksa 7 students at Saithany the Vientiane capital of Lao people’s democratic republic: multiple group analysis”. Trends of Humanities and Social Sciences Research 6, no. 2 (June 21, 2019): 63–83. accessed September 11, 2026. https://so03.tci-thaijo.org/index.php/Humanties-up/article/view/196545.