Fenando, Fenando. 2021. “Sistem Informasi Geografis (SIG) Pemetaan Lokasi Pertambangan Batu Bara Berbasis Quantum GIS (Studi Kasus: PT. Hasil Bumi Kalimantan)”. Journal of Information Systems and Informatics 3 (1), 108-20. https://doi.org/10.33557/journalisi.v3i1.94.