SUBROTO, Gatot; 						SOEJONO, Djoko.
 Utilization Arabica Skin Waste of Coffee as a Basic Material  for Making Bioethanol in Sukorejo Village, Sumber Wringin District Bondowoso Regency.
<strong>Warta Pengabdian</strong>, [S.l.], v. 16, n. 1, p. 58-74, mar. 2022.
ISSN 2655-7509.
Available at: &lt;<a href="https://jurnal.unej.ac.id/index.php/WRTP/article/view/21849" target="_new">https://jurnal.unej.ac.id/index.php/WRTP/article/view/21849</a>&gt;. Date accessed: 22 nov. 2024.
doi: <a href="https://doi.org/10.19184/wrtp.v16i1.21849">https://doi.org/10.19184/wrtp.v16i1.21849</a>.