Sugara, J., Wijaya, M.A. and White, A.R. 2026. Between Sovereignty and Inclusion: Recognition of Customary Law in Constitutional Systems under International Supervision: Between Sovereignty and Inclusion: Recognition of Customary Law in Constitutional Systems under International Supervision. PENA LAW: International Journal of Law. 3, 3 (Jan. 2026). DOI:https://doi.org/10.56107/penalaw.v4i1.290.