URL dokumen:
https://prisma.simaster.ugm.ac.id/karya_files/a-method-for-micro-powder-dispensing-by-using-dc-motor-with-a-2-axis-vibration-dcfcd07e645d245babe887e5e2daa016/42308e27-c16d-11ee-abf0-e4434b0aade8