1.
Wongwan P, Oupra S, Liangprayoon S. Development of English Speaking Ability Baedsed on Communicative Language Teaching (CLT): Case Study in a Language Center. CPY [internet]. 2019 Dec. 28 [cited 2026 Sep. 29];30(3):73-82. available from: https://so01.tci-thaijo.org/index.php/ejChophayom/article/view/216612