Pu, Xingxue, Sarita Buakhieo, and Songrid Chimmode. “Improvement First year vocational college students’ Thai speaking skills for introducing Tourist Attractions - Kunming with Flipped Classroom Teaching Methods”. Journal for Developing the Social and Community 13, no. 1 (March 13, 2026): 541–562. accessed September 2, 2026. https://so03.tci-thaijo.org/index.php/rdirmu/article/view/298368.