DIAN PRATIWI, Yuliyanti.
 Produk Cartesius Semipgrup Smarandache.
<strong>Jurnal Matematika</strong>, [S.l.], v. 2, n. 2, p. 63-69, dec. 2012.
ISSN 2655-0016.
Tersedia pada: &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;. Tanggal Akses: 15 oct. 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>.