Natalia, Stevi, Darhim, Yaya S. Kusumah, and Candra Ditasona. “Learning Obstacle to Ontogeny of Mathematics Teacher Candidates on Number Theory”. Journal of Education Research and Evaluation 7, no. 3 (August 27, 2023): 517–525. Accessed July 17, 2024. https://ejournal.undiksha.ac.id/index.php/JERE/article/view/66629.