Tongpitak, N. and Traiyasut, C. (2020) “Self-Learning of Students in Ubonratchathani Rajabhat University A Case Study: Statistics for Research”, Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University, 14(2), pp. 448–459. available at: https://so01.tci-thaijo.org/index.php/GraduatePSRU/article/view/237528 (accessed: 10 September 2026).