A. Moskal, A. Sobarnia, S. Pazera, i Z. Kopania, Red., „Conclusions .......... 149”, w The European Union in light of the COVID-19 Pandemic ‒ A Failure of European Integration or a Chance for Closer Cooperation among Member States?, Poland: Wydawnictwo Księgarnia Akademicka, 2021, s. 149–151. doi: 10.12797/9788381385763.06.