Tangtenglam S, Pongpanic A, Saesow C, Chidprasert C, Sonthanong M. Development Guidelines for Online Lesson Media Format for Service Industry Students. IJSASR [internet]. 2022 Nov. 4 [cited 2025 Jun. 24];2(6):1-10. available from: https://so07.tci-thaijo.org/index.php/IJSASR/article/view/1001