DROZD-PIASECKA, M. The Identity of Poznan Families of German Origin. The Fate of the Dittrich and Bajerlejn Families (18th–20th C.), Agnieszka Szczepaniak-Kroll, Poznań 2010, Wydawnictwo Poznańskie, Institute of Archaeology and Ethnology, Polish Academy of Sciences. Ethnologia Polona, [S. l.], p. 181–185, 2009. Disponível em: https://journals.iaepan.pl/ethp/article/view/643. Acesso em: 6 may. 2024.