Abidin M, Retnawati H. A diagnosis of difficulties in answering questions of circle material on junior high school students. Jurnal Penelitian dan Evaluasi Pendidikan [Internet]. 2019 Dec. 31 [cited 2025 May 4];23(2):144-55. Available from: https://journal.uny.ac.id/index.php/jpep/article/view/16454