Sureenate Jaratjarungkiat, Kyung-Eun Park, and Samuel Yuan Han Tan. “Predicative Adjectives in Thai: Diachronic Changes in the Past Century”. Journal of Mekong Societies, vol. 18, no. 1, Apr. 2022, pp. 75-102, https://so03.tci-thaijo.org/index.php/mekongjournal/article/view/260463.