URL dokumen:
https://prisma.simaster.ugm.ac.id/karya_files/the-estimation-of-ni--nrr--and-output-of-garut-sheep-at-a-breeding-center-in-garut-west-java-dcfcd07e645d245babe887e5e2daa016/694f11e4-7be6-11ec-a2b7-e4434b0aade8