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<strong>Jurnal Matematika</strong>, [S.l.], v. 2, n. 2, p. 50-62, dec. 2012.
ISSN 2655-0016.
Available at: &lt;<a href="https://ojs.unud.ac.id/index.php/jmat/article/view/7170" target="_new">https://ojs.unud.ac.id/index.php/jmat/article/view/7170</a>&gt;. Date accessed: 31 jan. 2025.
doi: <a href="https://doi.org/10.24843/JMAT.2012.v02.i02.p28">https://doi.org/10.24843/JMAT.2012.v02.i02.p28</a>.