Tonpo, K. . (2020) “The Language Usage and Techniques of the Speech in Graduation Ceremony Given at Srinakharinwirot University”, KKU Research Journal (Graduate Studies) Humanities and Social Sciences, 8(3), pp. 178–192. Available at: https://so04.tci-thaijo.org/index.php/gskkuhs/article/view/247824 (Accessed: 26 April 2024).