Martynas Brakas, Mažosios Lietuvos politine ir diplomatine istorija. Zeitschrift für Ostmitteleuropa-Forschung, [S. l.], v. 47, n. 3, p. 419–420, 1998. DOI: 10.25627/19984736674. Disponível em: https://openjournals.osmikon.de/zfo/article/view/6674. Acesso em: 16 sep. 2026.