Ginting, Riah Ukur, Mirna Yanti Harefa, Rianto Sitanggang, and Immanuel H G Manurung. “Klasifikasi Penyebaran Covid-19 Menggunakan Algoritma C4.5 Di Kecamatan Medan Helvetia”. JURNAL MAHAJANA INFORMASI 8, no. 2 (December 28, 2023): 99–107. Accessed November 18, 2024. http://114.7.97.221/index.php/7/article/view/4650.