YANG, Ziyu. The Effect of Learning a Second Foreign Language at an Early Age . Journal of Education, Humanities and Social Sciences, [S. l.], v. 8, p. 340–344, 2023. DOI: 10.54097/ehss.v8i.4271. Disponível em: https://drpress.org/ojs/index.php/EHSS/article/view/4271. Acesso em: 29 jun. 2026.