Marina, Marina, and Gunardi Lie. “Transaksi Bisnis Internasional Kopi Indonesia: Studi Kasus Kerja Sama PT Nusantara Coffee Dengan German Coffee GmbH”. SAKOLA: Journal of Sains Cooperative Learning and Law 2, no. 2 (October 11, 2025): 1041–1049. Accessed June 13, 2026. https://rayyanjurnal.com/index.php/sakola/article/view/7167.