Novialdy, N., U. Darussalam, and B. Rahman. “Expert System of Text Mining to Analyze Student Interaction in FTKI UNAS Online Lectures: Expert System of Text Mining to Analyze Student Interaction in FTKI UNAS Online Lectures”. Jurnal Mantik, vol. 3, no. 4, Feb. 2020, pp. 268-77, https://www.iocscience.org/ejournal/index.php/mantik/article/view/563.