PRAMESTI, C.; PRASETYA, A. Analysis of Students’ Mathematics Learning Difficulty Levels in Using Mathematical Principles. Edumatica : Jurnal Pendidikan Matematika, [S. l.], v. 11, n. 2, p. 9-17, 2021. DOI: 10.22437/edumatica.v11i02.11091. Disponível em: https://mail.online-journal.unja.ac.id/edumatica/article/view/11091. Acesso em: 10 jan. 2025.