1.
Le CN, Tran TKL. CHINESE TONE TEACHING CHALLENGES FOR VIETNAMESE STUDENTS: INSIGHTS ON VISUALIZATION TOOLS. TCKH ĐHSP TPHCM TPHCM [Internet]. 2025 Aug. 28 [cited 2026 Apr. 22];22(8):1507-1. Available from: https://journal.hcmue.edu.vn/index.php/hcmuejos/article/view/5009