Gurning, S., D. Agus, and J. Anwar. “Legal Protection Against Default in Informal Industrial Waste Sales Transactions: Perlindungan Hukum Terhadap Wanprestasi Dalam Transaksi Penjualan Limbah Industri Nonformal”. Academia Open, vol. 11, no. 1, June 2026, p. 10.21070/acopen.11.2026.14807, doi:10.21070/acopen.11.2026.14807.