Jiang, Z., P. Suphakit, and P. Lhongsap. “Effectiveness of Flipped Classroom Teaching Activities on Learning Achievement of Second-Year Teacher Students in Vocational Colleges”. Journal of Education Mahasarakham University, vol. 20, no. 3, Sept. 2026, pp. 42-56, https://so09.tci-thaijo.org/index.php/JOEMSU/article/view/9031.