PURBA, J.E. Melky. Konstruksi Normatif Model Martahi dalam Penyelesaian Wanprestasi Perjanjian pada Komunitas Mandailing : Normative Construction of the Martahi Model for Resolving Breach of Contract in Mandailing Communities . Juris Sinergi Journal, [S. l.], v. 2, n. 1, p. 13–23, 2025. DOI: 10.70321/jsj.v2i1.174. Disponível em: https://journal.sinergilp.com/index.php/jsj/article/view/174. Acesso em: 25 oct. 2026.