Phuong Linh, Pham, and Nathasorn Angsuwiriya. “Challenges of Pronouncing and Applying Thai Tone Rules Faced by Vietnamese Learners”. Journal of Arts and Thai Studies 47, no. 3 (December 30, 2025): E4810 (1–21). accessed August 31, 2026. https://so08.tci-thaijo.org/index.php/artssu/article/view/4810.