SZMIT, Marek; WOJTASZKO, Paweł; KOZIEŁ, Grzegorz. An assessment of portal to learn foreign languages. Journal of Computer Sciences Institute, [S. l.], v. 14, p. 14–18, 2020. DOI: 10.35784/jcsi.1567. Disponível em: https://ph.pollub.pl/index.php/jcsi/article/view/1567. Acesso em: 26 apr. 2024.