Causal Relation and Problem-Solution in Native and Non-Native Students’ Argumentation Essays Based on the Use of ‘Problem. London Journal of Research In Humanities and Social Sciences, [S. l.], v. 24, n. 15, p. 11–25, 2024. Disponível em: https://journalspress.uk/index.php/LJRHSS/article/view/1549. Acesso em: 12 jan. 2026.