Purba, Jeremy Emmanuel. “Ratio Decidendi, Agreement, Againts The Decision of MA No. 601K/PDT/2015 in The Case of Agreements that do not use Indonesian”. Jurnal Penelitian Hukum De Jure 21, no. 4 (Desember 31, 2021): 517–524. Diakses November 6, 2026. https://lawpolicyjournal.id/index.php/dejure/article/view/2091.