ALWALSS, B. A.; GHARAWAI, M. The Effect of Learning Materials on Students’ Language Gain: An Empirical Study at Jazan University, Saudi Arabia. Issues in Language Studies, [S. l.], v. 8, n. 1, p. 145–161, 2019. DOI: 10.33736/ils.1280.2019. Disponível em: https://publisher.unimas.my/ojs/index.php/ILS/article/view/1280. Acesso em: 10 may. 2025.