Do Thi Hong , N. 2021. TONGUE-TWISTER AS A METHOD OF STUDENTS’ PRONUNCIATION TRAINING AT HANOI UNIVERSITY (INITIAL STAGE OF TRAINING) . EurasianUnionScientists. (Oct. 2021), 4-7. DOI:https://doi.org/10.31618/ESU.2413-9335.2021.1.90.1458.