Saragih, Ely, Ady Nugroho, Hadi Jayusman, Riska Suryani, Khoirun Nisa, Sony Wibisono, and Christosie Wahyudi. “Daya Saing Karet Alam Negara Pengekspor Di Pasar Internasional”. Jurnal Kolaborasi Riset Sarjana 2, no. 2 (May 6, 2025): 11–18. Accessed October 13, 2025. https://ejournal.uhb.ac.id/index.php/korisa/article/view/1784.