Phan Ha U, Nguyen A. Difficulties of EFL teachers in teaching speaking skills: A case study at Trinh Hoai Duc Primary School. J. Knowl. Learn. Sci. Technol. [网际网络]. 2024年6月25日 [见引于 2026年7月23日];3(2):143-61. 载于: https://jklst.org/index.php/home/article/view/204