JARATJARUNGKIAT, S. Is the Copula /pen/ in Thai Meaningless?. Journal of Mekong Societies, [S. l.], v. 15, n. 2, p. 1–17, 2019. Disponível em: https://so03.tci-thaijo.org/index.php/mekongjournal/article/view/174496. Acesso em: 3 oct. 2022.