Bintang Romauli Gultom, Vidya Fathimah. Analisa Pendapatan Usaha Ternak Lembu Di Kecamatan Ujung Padang Kabupaten Simalungun. JEMSI [Internet]. 2024 Sep. 18 [cited 2026 Jul. 1];6(1):82-90. Available from: https://www.dinastirev.org/JEMSI/article/view/2623