“PENGAPLIKASIAN METODE SEKAT DALAM RANGKA EFISIENSI JARAK ANGKUT OVERBURDEN PADA OPERASIONAL PERTAMBANGAN BATUBARA”. Management Studies and Business Journal (PRODUCTIVITY) 2, no. 3 (March 24, 2025): 2213–2232. Accessed October 28, 2025. https://journal.ppipbr.com/index.php/productivity/article/view/604.