Susilowati N, Sukidjo S. The factors affecting national examination achievement in high schools. Harmoni. Sos.: J. Pendidik. IPS [Internet]. 2020 Mar. 21 [cited 2025 May 15];7(1):22-33. Available from: https://jurnal.uny.ac.id/index.php/hsjpi/article/view/8549