Nuril Azizah, Rizky Wahyu. “Student’s Mathematical Concept Understanding Ability in the Material of Functions of Class XI of SMA Islam Sabilurrosyad Gasek Malang”. Pasundan Journal of Mathematics Education 15, no. 1 (May 31, 2025): 81–92. Accessed August 24, 2025. https://journal.unpas.ac.id/index.php/pjme/article/view/20237.