Simangunsong, Juli N. “ANALISIS SWOT KOPERASI KARYAWAN PT. PERMATA SAWIT MANDIRI”. Jurnal Kewirausahaan Bukit Pengharapan 5, no. 1 (June 5, 2025): 12–21. Accessed July 31, 2026. https://www.journal.bukitpengharapan.ac.id/index.php/JUWIRA/article/view/726.