KOTLARSKA, Irmina. International language volapük (wolapik) — career and barrier. In: WOŹNIAK, Ewa; LENARTOWICZ-ZAGRODNA, Anna (eds.). Philology as the Ordering of Chaos: Language and Text Studies. Ad honorem Professoris Marci Cybulski. Poland: Lodz University Press,2018. p. 35–49. DOI: 10.18778/8142-402-8.04. Disponível em: https://press.uni.lodz.pl/index.php/wul/catalog/book/1182/chapter/3213. Acesso em: 15 feb. 2026.