WYSOKIŃSKA, Zofia; WITKOWSKA, Janina (EDS.). The European Union in the Process of Sustainable Development in the Conditions of the COVID-19 PANDEMIC . Poland: Lodz University Press,2022. DOI: 10.18778/8220-933-4. Disponível em: https://www.press.uni.lodz.pl/index.php/wul/catalog/book/679. Acesso em: 12 feb. 2026.