HADI, S.; WIJAYA, S. SECONDARY STUDENTS OF DIFFICULTIES IN MATHEMATICAL PROBLEMS SOLVING. Jurnal Ilmiah Global Education, [S. l.], v. 1, n. 1, p. 39–46, 2020. DOI: 10.55681/jige.v1i1.33. Disponível em: https://ejournal.nusantaraglobal.or.id/index.php/jige/article/view/33. Acesso em: 7 jan. 2025.