WĄSIK, E. M. NATURALNESS OF CHANGEABILITY AND VARIABILITY IN CONTACT SITUATIONS – PROPERTIES OF LANGUAGES OR LINGUISTIC FACULTIES OF COMMUNICATING AGENTS. Sustainable Multilingualism / Darnioji daugiakalbystė, [S. l.], n. 8, p. 122–141, 2023. Disponível em: https://ejournals.vdu.lt/index.php/SM/article/view/4452. Acesso em: 16 apr. 2025.