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ISSN 2303-1751. Available at: &lt;<a href="https://ojs.unud.ac.id/index.php/mtk/article/view/30824" target="_new">https://ojs.unud.ac.id/index.php/mtk/article/view/30824</a>&gt;. Date accessed: 29 apr. 2024.
doi: <a href="https://doi.org/10.24843/MTK.2017.v06.i02.p158">https://doi.org/10.24843/MTK.2017.v06.i02.p158</a>.