Fadhilah, Murni, Sela Sutrisna, Siti Nuri Muslimah, and Muhammad Taufik Ihsan. “An Exploring Methods in Online Learning: Synchronous and Asynchronous”. ETDC: Indonesian Journal of Research and Educational Review 1, no. 1 (December 27, 2021): 74–81. Accessed October 8, 2025. https://www.etdci.org/journal/ijrer/article/view/55.