Nguyen, The Binh. 2020. “The Effect of Applying ‘Small Talk As Warming-up technique’ in EFL Classrooms on students’ Improvement in English Speaking Skill”. Tạp Chí Khoa học Đại học Đồng Tháp 9 (6):17-24. https://doi.org/10.52714/dthu.9.6.2020.827.