Phan Ha , U. 和 Nguyen , A. (2024) 《Difficulties of EFL teachers in teaching speaking skills: A case study at Trinh Hoai Duc Primary School》, 知识学习与科学技术期刊 ISSN：2959-6386（在线）, 3(2), 页 143–161. doi:10.60087/jklst.vol3.n2.p161.