RAMADHANIA, D.; PRAYITNO, S. .; SUBARINAH, S. .; ARJUDIN, A. Analysis of mathematics problem-solving ability on plane figure subject based on van hieles theory at Junior High School. Jurnal Pijar Mipa, [S. l.], v. 17, n. 4, p. 493–498, 2022. DOI: 10.29303/jpm.v17i4.3413. Disponível em: https://jurnalfkip.unram.ac.id/index.php/JPM/article/view/3413. Acesso em: 28 jan. 2023.