KOTLARSKA, Irmina. Volapük as a language of success in the light of selected Polish textbooks from the 1880s. Język. Komunikacja. Informacja, [S. l.], n. 13, p. 32–46, 2019. DOI: 10.14746/jki.2018.13.2. Disponível em: https://pressto.amu.edu.pl/index.php/jki/article/view/18975. Acesso em: 22 dec. 2024.