Akbar, Alfikrul, and Ahsanul Mufid. “Normative Juridical Analysis of Marriage Without a Guardian in the Practice of Unregistered Polygamy Reviewed from Islamic Law and Indonesian Positive Law”. Muwafaqat: Journal of Islamic Law, vol. 1, no. 2, Dec. 2025, pp. 90-102, https://jurnal.kayaswara.com/index.php/muwafaqat/article/view/136.