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<strong>Jurnal Ilmiah Matematika dan Pendidikan Matematika</strong>, [S.l.], v. 1, n. 2, p. 17-24, oct. 2009.
ISSN 2550-0422.
Available at: &lt;<a href="http://jos.unsoed.ac.id/index.php/jmp/article/view/2978" target="_new">http://jos.unsoed.ac.id/index.php/jmp/article/view/2978</a>&gt;. Date accessed: 18 apr. 2024.
doi: <a href="https://doi.org/10.20884/1.jmp.2009.1.2.2978">https://doi.org/10.20884/1.jmp.2009.1.2.2978</a>.