Rusti Nengtiyas, Wardha, and Cahya Mar’a Saliha Sumantri. “APOS Theory: Description of Mathematical Understanding Abilities in Two-Variable Linear Equations Systems in Terms of Auditory Learning Styles and Gender”. Proceeding of the Excellent Campus and Technology Conference 2, no. 2 (October 31, 2025): 245–258. Accessed October 12, 2026. https://eprosiding.unupasuruan.ac.id/index.php/pectc/article/view/32.