Maneewong, S., and W. Suwunniponth. “THE DEVELOPMENT OF LEARNING MEDIA USING VIRTUAL TECHNOLOGY TO INCREASE LEARNING ACHIEVEMENT: A CASE OF ENGLISH FOR CONGRATULATION AND STUDY SKILLS ”. International Conference "Actual Economy: Local Solutions for Global Challenges", Feb. 2020, pp. 42-50, https://conferaces.com/index.php/journal/article/view/181.