Luthfio Febri Trihandika, Azka Ubaidillah, Afifah Az-Zahra, Amirudin, Milla Rusydiana, and Zahra Maharani. “mall rea stimation nak idak ekolah i ulau alimantan ahun 2023”. imits: ournal of athematics and ts pplications, vol. 21, no. 2, July 2024, pp. 273-88, https://journal.its.ac.id/index.php/limits/article/view/5512.