KHAIRIYAH, A.; EFENDI, M.; PUTRI, K. V. K. The Urgency of Isbat Nikah in the Dynamics of Living Law: A Sociology of Law Analysis of Unregistered Marriage in Indonesia. Adagium: Jurnal Ilmiah Hukum, v. 4, n. 2, p. 1297–1314, 28 Sep.2026.