TSYMBAL, S. ILPT as effective means of studies of persons of ripe years to the foreign speech. Journal of Education, Technology and Computer Science, [S. l.], v. 9, n. 1, p. 273–278, 2014. Disponível em: https://journals.ur.edu.pl/jetacomps/article/view/6669. Acesso em: 2 oct. 2024.