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Available at: &lt;<a href="https://ojs.unud.ac.id/index.php/jmat/article/view/7171" target="_new">https://ojs.unud.ac.id/index.php/jmat/article/view/7171</a>&gt;. Date accessed: 31 jan. 2025.
doi: <a href="https://doi.org/10.24843/JMAT.2012.v02.i02.p29">https://doi.org/10.24843/JMAT.2012.v02.i02.p29</a>.