Wibowo, Teguh, Prasetyo Budi Darmono, and Haliza Nur Azieta. “An Analysis of the Ability to Understand Mathematical Concepts of Middle School Students in Completing Integer Operations”. Jurnal Pendidikan Matematika 16, no. 1 (October 14, 2024): 29–44. Accessed November 21, 2024. https://jpm.ejournal.unsri.ac.id/index.php/jpm/article/view/159.