Anisa UI, Kartini K. Analysis of Student Errors in Solving Relation and Function Problems Based on Kastolan Error Theory Class VIII SMP IT Bangkinang. Universitas Jambi [Internet]. 2023 Sep. 3 [cited 2025 Apr. 5];13(2):172-80. Available from: https://online-journal.unja.ac.id/edumatica/article/view/19473