URL dokumen:
https://prisma.simaster.ugm.ac.id/karya_files/recent-progress-on-the-implementation-of-renewable-biodiesel-fuel-for-automotive-and-power-plants-raw-materials-perspective-dcfcd07e645d245babe887e5e2daa016/6f5a9e17-4e6e-11ed-a7a2-e4434b0aade8
