ALBRECHT, H. Adolph Lewisohn: Kupfermagnat im "Goldenen Zeitalter". [s.l.] : Hamburg University Press,2013. v. 13 DOI: 10.15460/HUP.MFW.13.135. Disponível em: https://hup.sub.uni-hamburg.de/oa-pub/catalog/book/81. Acesso em: 20 apr. 2024.