ALBRECHT, H. Alfred Beit: The Hamburg Diamond King. [s.l.] : Hamburg University Press,2012. v. 9 DOI: 10.15460/HUP.MFW.9en.127. Disponível em: https://hup.sub.uni-hamburg.de/oa-pub/catalog/book/87. Acesso em: 21 nov. 2024.