Iswan, Mochammad, M. Syaifuddin, and Rian Farta Wijaya. “The Effectiveness of Smart Learning Based on Expert Systems in Cryptography Courses”. JURNAL TEKNOLOGI DAN OPEN SOURCE 4, no. 2 (December 20, 2021): 205 - 215. Accessed January 31, 2025. https://ejournal.uniks.ac.id/index.php/JTOS/article/view/1795.