Kulnathon, P. . “Humanities and Social Sciences Journal of Graduate School, Pibulsongkram Rajabhat University”. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University, vol. 14, no. 1, June 2020, https://so01.tci-thaijo.org/index.php/GraduatePSRU/article/view/242424.