Ukrainian as a foreign language: linguadidactic problems. Philological Studies: Scientific Bulletin of Kryvyi Rih State Pedagogical University, [S. l.], v. 5, p. 226–232, 2010. DOI: 10.31812/filstd.v5i0.913. Disponível em: https://journal.kdpu.edu.ua/filstd/article/view/913. Acesso em: 5 dec. 2025.