Shantika, Evana Gina, and Edi Istiyono. “A Diagnosis of students’ Errors in Answering the Mathematics Test in Senior High School”. Jurnal Penelitian dan Evaluasi Pendidikan 23, no. 2 (December 31, 2019): 129–143. Accessed May 7, 2025. https://journal.uny.ac.id/index.php/jpep/article/view/16370.