Purba, Supriyadi, and Louise M. Saija. “Didactical Design for Cubes and Cuboids to Overcome SMP Students Mathematical Reasoning Obstacles”. Jurnal Padegogik 6, no. 2 (July 21, 2023): 88-98. Accessed November 22, 2024. https://jurnal.unai.edu/index.php/jpd/article/view/3154.