Thi Hang, T. “Associating the Point Between President Ho Chi Minh’s Lack of Descendants and the Easterners’ Son Preference Attitude”. Journal of Liberal Arts Prince of Songkla University, vol. 12, no. 1, June 2020, pp. 63-88, https://so03.tci-thaijo.org/index.php/journal-la/article/view/244494.