Suryani Putri, Emi, Dony Permana, Yerizon Yerizon, and I Made Arnawa. “Developing Guided Discovery-Based Learning Device for Improving Middle School Students’ Mathematics Problem-Solving Ability”. Jurnal Gantang 7, no. 2 (December 28, 2022): 197–204. Accessed May 5, 2024. https://ojs.umrah.ac.id/index.php/gantang/article/view/4933.