PAVLENKO, Olena O.; BONDAR, Oksana Ye.; YON, Bae Gi; KWANGOON, Choi; TYMCHENKO-MIKHAILIDI, Nataliia S.; KASSIM, Darja A. The enhancement of a foreign language competence: free online resources, mobile apps, and other opportunities. CTE Workshop Proceedings, Kryvyi Rih, Ukraine, v. 6, p. 279–293, 2019. DOI: 10.55056/cte.391. Disponível em: https://acnsci.org/journal/index.php/cte/article/view/391.. Acesso em: 29 apr. 2026.