CZAJKOWSKI, M. Strony świata Muminków. Litteraria Copernicana, [S. l.], n. 4(36)/, p. 117–119, 2020. DOI: 10.12775/LC.2020.052. Disponível em: https://apcz.umk.pl/LC/article/view/LC.2020.052. Acesso em: 28 lis. 2021.