URL dokumen:
https://prisma.simaster.ugm.ac.id/karya_files/excellent-performance-of-hybrid-model-manufactured-via-additive-manufacturing-process-reinforced-with-gfrp-for-sport-climbing-equipment-dcfcd07e645d245babe887e5e2daa016/be98f710-8474-11ee-abf0-e4434b0aade8