TANJUNG, Y. I. T.; FESTIYED, F.; DILIAROSTA, S. D.; JUBAIDAH, J.; SANJAYA, A. P. S. Analysis of Students’ Problem Solving Skills based on Heller Indicator. Pegem Journal of Education and Instruction, [S. l.], v. 14, n. 4, p. 421–433, 2024. DOI: 10.47750/pegegog.14.04.40. Disponível em: https://pegegog.net/index.php/pegegog/article/view/2693. Acesso em: 1 jul. 2025.