HŁYŃ, Maria. Helena Chłopocka (4 III 1921–28 IV 2011). Kwartalnik Historyczny, [S. l.], v. 120, n. 3, p. 641–646, 2013. DOI: 10.12775/14564. Disponível em: https://apcz.umk.pl/KH/article/view/14564. Acesso em: 8 lip. 2025.