SUWANGARD, N.; TUENGKUN, S. Sustainable Improvement on English Speaking Skill. Journal of Humanities and Social Sciences Uttaradit Rajabhat University, [S. l.], v. 9, n. 1, p. 15–27, 2022. Disponível em: https://so04.tci-thaijo.org/index.php/johuru/article/view/259579. Acesso em: 26 apr. 2024.