ĆWIKŁA, Łukasz. Piotr of Stryków, Łazęka coat of arms (died 1468) – knight, politician and landlord. Melusine. Old Literature and Culture, [S. l.], v. 18, n. 1, p. 37–44, 2024. DOI: 10.26485/me.2023.1-03. Disponível em: https://czasopisma.ltn.lodz.pl/Meluzyna/article/view/2465. Acesso em: 1 feb. 2025.