Kalvin Imam Inayah and Meriksa Sembiring (2025) “ANALISA USAHA TERNAK DOMBA (Ovis aries) DI KECAMATAN BATANG SERANGAN KABUPATEN LANGKAT”, Journal of Innovation Research and Knowledge, 4(9), pp. 6593–6604. doi: 10.53625/jirk.v4i9.9672.