URL dokumen:
https://prisma.simaster.ugm.ac.id/karya_files/nature-of-magma-and-ore-forming-conditions-at-the-randu-kuning-porphyry-cu-au-deposit--indonesia--a-comparative-study-with-other-cu-au-depos-dcfcd07e645d245babe887e5e2daa016/cdd7528e-978d-11f0-ae8a-e4434b0aa6de
