Ningsih, B. nining sulastri ningaih. 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 2023, 5, 4-9.