Mimma Maripatul Uula, Aam Slamet Rusydiana, and Siti Maysyaroh Siti Maysyaroh. “Fiqh Contracts for BPJS Ketenagakerjaan Syariah: A Conceptual Approach to Wakalah Bil Ujrah, Wakalah Bil Istithmar, and Tabarru’”. Jurnal Jamsostek 3, no. 2 (December 31, 2025): 133–151. Accessed January 10, 2026. https://jurnalbpjamsostek.or.id/index.php/bpjamsostek/article/view/75.