Usefulness of mobile learning (M-learning) in learning foreign languages. Mokslo taikomieji tyrimai / Applied Research, [S. l.], v. 2, n. 20, p. 39–46, 2024. DOI: 10.59476/mtt.v2i20.677. Disponível em: http://5.133.66.111/index.php/mttlk/article/view/677. Acesso em: 8 aug. 2025.