“Hospital Billing Payment System Using Host To Host Method in Bung Karno Hospital, Surakarta City”. Jurnal Informatika, Komputer dan Bisnis (JIKOBIS) 2, no. 2 (December 14, 2022). Accessed July 1, 2025. https://jurnal.itbaas.ac.id/index.php/jikobis/article/view/25.