Ramadhani, Rahma, Iftitaahul Mufarrihah, and Nihayatus Sa’adah. “Analysis of Students’ Errors in Solving Mathematical Proof Problems on Real Numbers”. Pi: Mathematics Education Journal 9, no. 1 (April 30, 2026): 26–38. Accessed May 13, 2026. http://ejournal.unikama.ac.id/index.php/pmej/article/view/13682.