Nguyen, T. T. T., and K. Wichayapakorn. “An Analysis of Beliefs in Vietnamese Folktales”. Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University, vol. 12, no. 1, July 2017, pp. 99-114, https://so01.tci-thaijo.org/index.php/GraduatePSRU/article/view/81627.