TYSZKIEWICZ, J. Edward Potkowski (10 V 1934 – 31 VII 2017). Kwartalnik Historyczny, [S. l.], v. 125, n. 3, p. 803–805, 2019. DOI: 10.12775/19014. Disponível em: https://apcz.umk.pl/KH/article/view/19014. Acesso em: 20 kwi. 2024.