A. B. M. Sudarmin, U. Amri, R. Amelia, R. Rismawati, and Ajmalunnas M, “Fiqh al-Bī’ah and Mining Concessions: NU and Muhammadiyah’s Legal Responses”, PAREWA SARAQ, vol. 4, no. 2, pp. 117–128, Nov. 2025.