URL dokumen:
https://prisma.simaster.ugm.ac.id/karya_files/pembicara-pada-workshop-social-economic-effect-on-the-aging-population-and-health-care-dcfcd07e645d245babe887e5e2daa016/e2041b2f-efc7-11ee-b5b3-e4434b0aa6de