R. W. I. Sinaga, “RECLAMATION COST CALCULATION OF PT. X IN SORONG CITY, SOUTHWEST PAPUA PROVINCE: PERHITUNGAN BIAYA REKLAMASI PT. X KOTA SORONG PROVINSI PAPUA BARAT DAYA”, Program Studi S1 Teknik Pertambangan Universitas Papua, vol. 7, no. 2, Dec. 2024.