“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”. JISTECH: Journal of Information Science and Technology 7, no. 1 (January 22, 2023). Accessed September 28, 2026. http://jistech.unipa.ac.id/index.php/istech/article/view/131.