Fahmi, Syariful, and Soffi Widyanesti Priwantoro. “Learning Mathematical Logic and Sets Using E-Learning”. At-Taqaddum 15, no. 1 (July 25, 2023): 42–50. Accessed May 18, 2025. https://journal.walisongo.ac.id/index.php/attaqaddum/article/view/13674.