Singh, Sukhbir, Felix Widarko, Johan Libby, Kelvin, and Mardi Turnip. “Analysis Distance Learning System With Quantitative Descriptive Methods”. Jurnal Mantik 4, no. 4 (February 1, 2021): 2576-2580. Accessed April 25, 2026. https://iocscience.org/ejournal/index.php/mantik/article/view/1213.