PFENNINGER, Simone E.; SINGLETON, David. The Age Factor in the Foreign Language Class: What Do Learners Think?. Theory and Practice of Second Language Acquisition, [S. l.], v. 2, n. 1, 2016. Disponível em: https://trrest.vot.pl/ojsus/index.php/TAPSLA/article/view/3930. Acesso em: 6 may. 2025.