HIMMI, Nailul; 						HATWIN, Lia Bidari Agustin.
 PENGEMBANGAN MODUL SISTEM PERTIDAKSAMAAN DUA VARIABEL BERBASIS GEOGEBRA TERHADAP KEMAMPUAN VISUAL THINKING MATEMATIS SISWA KELAS X.
<strong>PYTHAGORAS: JURNAL PROGRAM STUDI PENDIDIKAN MATEMATIKA</strong>, [S.l.], v. 7, n. 1, p. 35-46, apr. 2018.
ISSN 2615-7926.
Available at: &lt;<a href="https://www.journal.unrika.ac.id/index.php/jurnalphythagoras/article/view/1208" target="_new">https://www.journal.unrika.ac.id/index.php/jurnalphythagoras/article/view/1208</a>&gt;. Date accessed: 13 feb. 2026.
doi: <a href="https://doi.org/10.33373/pythagoras.v7i1.1208">https://doi.org/10.33373/pythagoras.v7i1.1208</a>.