Ambarita, Hanaya Manuela, Parlaungan G Siahaan, Ulan Dari, Nur Cahyu Azizah, and Alfonsius Ligoriker. “Analisis Yuridis Konsep Opportunity Cost Sebagai Komponen Ganti Kerugian Dalam Wanprestasi Perjanjian Peminjaman Uang”. Journal of Law, Education and Business 3, no. 2 (October 11, 2025): 923–927. Accessed June 12, 2026. https://rayyanjurnal.com/index.php/jleb/article/view/6458.