PHAN, Huu Vinh; NGUYEN, Le Uyen Minh. An Analysis of Refusal Speech Acts Used by Vocational Students at a Vietnamese College. The University of Phan Thiet Journal of Science, [S. l.], v. 3, n. 3, p. 82–102, 2025. Disponível em: https://tapchikhoahocupt.vn/index.php/uptjs/article/view/uptjs-93-2025.. Acesso em: 21 jan. 2026.