Khoirunnisa, A. , M. Yunus, F. and Achyar, G. 2026. Lineage, Adoption, and Legal Dualism: A Case Study of the Inclusion of Adopted Children in Family Cards in Marihat Butar Village, Simalungun. Jurnal Mediasas: Media Ilmu Syari’ah dan Ahwal Al-Syakhsiyyah. 9, 1 (Feb. 2026), 134–148. DOI:https://doi.org/10.58824/mediasas.v9i1.488.