Andin, Silfia, and Sarjon Defit. “Rought Set: Effective Method for Determining Scholarship Recipients”. Jurnal Penelitian Pendidikan IPA 10, no. 4 (April 25, 2024): 1624–1632. Accessed July 1, 2024. https://jppipa.unram.ac.id/index.php/jppipa/article/view/7088.