Tonpradit, R., W. Sriyabhaya, W. Yingyongsak, and P. Pothi. “The Use of Language in Keynote Address on Thai Language and Literature by Prime Minister of Thailand: Case Study of M.R. Kukrit Pramoj and Mr. Chuan Leekpai”. Chophayom Journal, vol. 34, no. 3, Dec. 2023, pp. 62-85, https://so01.tci-thaijo.org/index.php/ejChophayom/article/view/269398.