Nugroho, Y., Riyanto, R., Iskandar, J., Aman, M. and Wiyono, N. 2023. Web-Based Patient Referral System Design from Clinic to Hospital Using Object Oriented Programming System. Journal of Information Systems and Informatics. 5, 1 (Feb. 2023), 87-101. DOI:https://doi.org/10.51519/journalisi.v5i1.425.