GYAU, Christopher. A Quantitative Approach to the Study of Deviant Usage of Mood and Modality in Argumentative Essays of Second Year Students of Berekum College of Education. European Scientific Journal, ESJ, [S. l.], v. 18, n. 9, p. 20, 2022. DOI: 10.19044/esj.2022.v18n9p20. Disponível em: https://test.eujournal.org/index.php/esj/article/view/15254. Acesso em: 15 may. 2025.