“SIRTU PRODUCTION DETERMINATION BASED ON MINING BREAK-EVEN POINT AT PT. MANOKWARI LEMON ISLAND: PENENTUAN PRODUKSI SIRTU BERDASARKAN TITIK IMPAS PENAMBANGAN PADA PT. PULAU LEMON MANOKWARI” (2023) JISTECH: Journal of Information Science and Technology, 7(1). Available at: http://jistech.unipa.ac.id/index.php/istech/article/view/131 (Accessed: 28 September 2026).