Duangchant, S., Piromnok, N., & Chunhapataragul, T. (2018). Development of Multimedia Packages for the Promotion of Teaching Morality and Positive Values to Youths in Four Regions. ASEAN Journal of Education, 4(1), 97–115. Retrieved from https://so01.tci-thaijo.org/index.php/AJE/article/view/180423