Ditthachot, J., P. Rerkwiang, and K. Wareeket. “The Study of Origin of Thai Idioms in the Literature of Si Phaen Din”. RBRU Journal of Humanities and Social Sciences (online), vol. 1, no. 1, June 2020, pp. 49-60, https://so05.tci-thaijo.org/index.php/husorbrujournal/article/view/244494.