Darma, Darma, et al. “Pengaruh Geometri Gerigi Dan Kecepatan Putar Terhadap Kinerja Mesin Parut Sagu Tipe Silinder”. Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering), vol. 10, no. 3, Sept. 2021, pp. 413-24, doi:10.23960/jtep-l.v10i3.413-424.