เวทะนา พ., อาจแก้ว จ. and ศรีจำนงค์ จ. (2019) “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(2), pp. 63–83. Available at: https://so03.tci-thaijo.org/index.php/Humanties-up/article/view/196545 (Accessed: 25 April 2024).