Rajak A, Asmaq N. Analisis Kelayakan Usaha Peternak Sapi KUD Singkuang I Kecamatan Muara Batang Gadis Kabupaten Mandailing Natal. PETERPAN [Internet]. 2025 Oct. 23 [cited 2026 Sep. 17];7(2):107-13. Available from: https://jurnal.polinela.ac.id/index.php/peterpan/article/view/4325