Analysis of Difficulty of Science Learning-Based Multi-Representation. Jurnal Pendidikan Fisika, [S. l.], v. 8, n. 3, p. 263–278, 2020. DOI: 10.26618/jpf.v8i3.3924. Disponível em: https://journal.unismuh.ac.id/index.php/jpf/article/view/3924. Acesso em: 3 aug. 2025.