Wilaiwan Kemkan และ Parinyapast Seethong. (2026) Developing Competency in Thai as a Second Language Instruction Through Active Learning Approach for Pre - Service Thai Language Teachers at Lampang Rajabhat University. <i>Aksara Pibul Journal</i>, <i>7</i>(1), 246-259.Wilaiwan Kemkan และ Parinyapast Seethong. "Developing Competency in Thai as a Second Language Instruction Through Active Learning Approach for Pre - Service Thai Language Teachers at Lampang Rajabhat University". Aksara Pibul Journal 7 (2026):246-259.Wilaiwan Kemkan และ Parinyapast Seethong. Developing Competency in Thai as a Second Language Instruction Through Active Learning Approach for Pre - Service Thai Language Teachers at Lampang Rajabhat University. Faculty of Humanities and Social Sciences, Pibulsongkram Rajabhat University:ม.ป.ท. 2026.