Ahmad Fauji Lubi, Adhona Bhajana Wijaya Negara, and Alfath Rusdhi. 2025. “ANALIS PENDAPATAN USAHA PETERNAKAN SAPI RAKYAT DI KECAMATAN BESITANG KABUPATEN LANGKAT”. Journal of Innovation Research and Knowledge 5 (1):687-92. https://bajangjournal.com/index.php/JIRK/article/view/10394.