Harahap, S., Harahap, R. H., & Mohd Roslan Moh Nor. (2026). Customary Negotiation and Islamic Environmental Law: Human-Nature Relations in the Batak Angkola Community, South Tapanuli, Indonesia. Ijtihad : Jurnal Wacana Hukum Islam Dan Kemanusiaan, 26(1), 1–36. https://doi.org/10.18326/ijtihad.v26i1.1-36