Kosasih, Kosasih, Alif Yosi Samrotul Qolbi, Annisa Dwi Ramdania Pamungkas, Muthia Isratnasari, and Leoni Ester Manukiley. “Implementation of the JKN Tiered Referral System: A PRISMA-Based Systematic Literature Review and Bibliometric Analysis of Healthcare Management Challenges”. Advances in Human Resource Management Research 4, no. 2 (May 31, 2026). Accessed June 7, 2026. https://advancesinresearch.id/index.php/AHRMR/article/view/783.