topothai, varangkana. “A Development of Online Lessons on the Topic of Educational Media Production for Undergraduate Students in Educational Technology and Communication Program, Sukhothai Thammathirat Open University”. ECT Education and Communication Technology Journal 20, no. 29 (July 25, 2025): 91–105. accessed December 10, 2025. https://so01.tci-thaijo.org/index.php/ectstou/article/view/278113.