YAKIN, Gusnul H; 						SATRIYA WIBAWA, I Made; 						PUTRA, I Ketut.
 Design of Soil pH Measuring Instruments Using pH Meter Sensor Module V1.1 SEN0161 Based on Arduino Uno.
<strong>BULETIN FISIKA</strong>, [S.l.], v. 22, n. 2, p. 105–111, jan. 2021.
ISSN 2580-9733.
Available at: &lt;<a href="https://ojs.unud.ac.id/index.php/buletinfisika/article/view/68316" target="_new">https://ojs.unud.ac.id/index.php/buletinfisika/article/view/68316</a>&gt;. Date accessed: 22 sep. 2023.
doi: <a href="https://doi.org/10.24843/BF.2021.v22.i02.p08">https://doi.org/10.24843/BF.2021.v22.i02.p08</a>.