HAASE, H. Findbuch des Bestandes Abt. 320.6: Kreis Flensburg-Land 1867-1968. [s.l.] : Hamburg University Press,2017. v. Band 111 DOI: 10.15460/HUP.LASH.111.165. Disponível em: https://hup.sub.uni-hamburg.de/oa-pub/catalog/book/145. Acesso em: 4 okt. 2023.