Analisa Ekonomi Usaha Ternak Itik Pedaging di Kabupaten Langkat . Jurnal Riset Agribisnis dan Peternakan, [S. l.], v. 1, n. 2, p. 1–12, 2016. Disponível em: https://jurnal.umpwr.ac.id/index.php/jrap/article/view/787. Acesso em: 2 sep. 2026.