JUDKOWIAK, Barbara. Roman Pollak (1887–1972). Biogram. Poznańskie Studia Polonistyczne. Seria Literacka, [S. l.], n. 45, p. 11–14, 2023. Disponível em: https://pressto.amu.edu.pl/index.php/pspsl/article/view/44090. Acesso em: 5 sty. 2025.