Hira, Cendikia, Saman Abdurrahman, and Thresye Thresye. 2022. “Sifat-Sifat Anti Subgrup Fuzzy”. Prosiding Seminar Nasional Matematika Dan Pendidikan Matematika 7 (December):301-10. https://conference.upgris.ac.id/index.php/senatik/article/view/3314.