อยู่เย็น ว. Prince Wongsathiratsanit : the Scholar Who Solved the Problem of the Confusing Used of Marks < ๗ > and < ๘ > in the Thai Writing System. JASU [internet]. 2020 Feb. 21 [cited 2026 Sep. 24];30(2):9-24. available from: https://so04.tci-thaijo.org/index.php/jasu/article/view/239912