Waduangsri S. The development of ability and satisfaction in learning about pronunciation words diphthongs by using to pronunciation skill in Thai language with lt technique of prathom suksa 4 students. JDSC [internet]. 2023 Apr. 27 [cited 2026 Sep. 1];10(1):517-24. available from: https://so03.tci-thaijo.org/index.php/rdirmu/article/view/261303