Biu, S., and F. Darise. “RANCANG BANGUN MESIN PERONTOK BULU AYAM”. JTPG (Jurnal Teknologi Pertanian Gorontalo), Vol. 1, no. 1, Oct. 2017, p. 50, https://jurnal.poltekgo.ac.id/index.php/jtpg/article/view/24.