Irviani Anwar Ibrahim1, A. Syamsiah Adha. Study of Patient Billing Calculation System at PKU Muhammadiyah Mamajang Hospital Makassar. hmsj [Internet]. 2025 Jun. 28 [cited 2026 Jan. 1];6(2):116-32. Available from: https://arsip-journal.uin-alauddin.ac.id/index.php/homesjournal/article/view/59193