Khampha, K., Thongbai, T., & Pankoo, B. (2022). The Code of Ethics of Teachers in Public Service Advertising on the 7ElevenThailand YouTube Channel between 2012 – 2020. FOYER: The Journal of Humanities, Social Sciences, and Education, 5(1), 143–182. Retrieved from https://so02.tci-thaijo.org/index.php/lajournal/article/view/255297