Biu, Supardi, and Farid Darise. 2017. “RANCANG BANGUN MESIN PERONTOK BULU AYAM”. JTPG (Jurnal Teknologi Pertanian Gorontalo) 1 (1), 50. https://jurnal.poltekgo.ac.id/index.php/jtpg/article/view/24.