MUSTAPHA WALAF. The Impact of Portfolio Task Assignment on the Development of Moroccan EFL Middle School Learners’ Critical Thinking Skills. Frontiers in English Language and Linguistics, [S. l.], v. 3, n. 2, p. 01–14, 2026. DOI: 10.32996/fell.2026.3.2.1. Disponível em: https://al-kindipublishers.org/index.php/fell/article/view/13005. Acesso em: 4 jul. 2026.