Robert Frost, The Oxford History of Poland-Lithuania. Zeitschrift für Ostmitteleuropa-Forschung, [S. l.], v. 67, n. 1, p. 123–124, 2018. DOI: 10.25627/201867110337. Disponível em: https://openjournals.osmikon.de/zfo/article/view/10337. Acesso em: 16 sep. 2026.