B. nining sulastri ningaih Ningsih, “Penegakan Sanksi Hukum Terhadap Nasabah Wanprestasi Pada Koperasi Serba Usaha Bumi Raya Selong: Enforcement Of Legal Sanctions Against Customers In Default At Bumi Raya Selong Multiple Business Copperative”, juridica, vol. 5, no. 1, pp. 4–9, Nov. 2023.