ลิ้มชัยเจริญ อ, มีศรี ร. EFFECTS OF CONTENT-BASED INSTRUCTION ON ENGLISH SPEAKING SKILL OF THAI EFL STUDENTS AT UPPER PRIMARY LEVEL. OJED [internet]. 2019 Jul. 10 [cited 2026 Aug. 28];13(3):490-503. available from: https://so01.tci-thaijo.org/index.php/OJED/article/view/202462