Syarif, Muhamad, and Wahyu Nugraha. “PEMODELAN DIAGRAM UML SISTEM PEMBAYARAN TUNAI PADA TRANSAKSI E-COMMERCE”. JTIK (Jurnal Teknik Informatika Kaputama) 4, no. 1 (January 1, 2020): 64–70. Accessed February 8, 2025. https://jurnal.kaputama.ac.id/index.php/JTIK/article/view/636.