Maf'ulah, Syarifatul. “Analisis Pemahaman Konseptual Siswa SMP Materi Himpunan”. Pi: Mathematics Education Journal 7, no. 1 (April 30, 2024): 1–11. Accessed November 22, 2024. http://ejournal.unikama.ac.id/index.php/pmej/article/view/9484.