Budiastra, A.A. Ketut, Udan Kusmawan, and Hanafi. “Effectiveness of Organizing a Non-Face to Face Tutorial Package System in Distance Education”. Advances in Social Sciences Research Journal 7, no. 6 (June 22, 2020): 280–297. Accessed March 29, 2024. https://journals.scholarpublishing.org/index.php/ASSRJ/article/view/8392.