Dassa, Awi, Nasrullah, and Hasniati. “Analysis of Mathematics Communication Skill of Students Grade IX in Quadratic Equation Based on Their Mathematics Ability”. ARRUS Journal of Mathematics and Applied Science 1, no. 2 (December 5, 2021): 101–109. Accessed April 18, 2026. https://jurnal.ahmar.id/index.php/mathscience/article/view/640.