RATHJEN, J. Findbuch des Bestandes Abt. 22: Herzöge von Schleswig-Holstein-Sonderburg-Augustenburg. [s.l.] : Hamburg University Press,2012. v. 102 DOI: 10.15460/HUP.LASH.102.119. Disponível em: https://hup.sub.uni-hamburg.de/oa-pub/catalog/book/144. Acesso em: 19 mai. 2024.