PAWARANGAN, Ishak; 						JEFRIYANTO, Wilson.
 Identification of Electrical Properties of Bio-battery based on Spent Coffee Grounds.
<strong>BULETIN FISIKA</strong>, [S.l.], v. 23, n. 2, p. 92-96, aug. 2021.
ISSN 2580-9733.
Available at: &lt;<a href="https://ojs.unud.ac.id/index.php/buletinfisika/article/view/76198" target="_new">https://ojs.unud.ac.id/index.php/buletinfisika/article/view/76198</a>&gt;. Date accessed: 07 feb. 2025.
doi: <a href="https://doi.org/10.24843/BF.2022.v23.i02.p03">https://doi.org/10.24843/BF.2022.v23.i02.p03</a>.