Cindy Ainun Majid, Dian Eka Wijayanti, Aris Thobirin, and Puguh Wahyu Prasetyo. “elabelan arak ak eratur itik ada raf ersahabatan engkap iperumum”. imits: ournal of athematics and ts pplications, vol. 20, no. 1, Mar. 2023, pp. 11-24, https://journal.its.ac.id/index.php/limits/article/view/5436.