Berzelius, Jacob, Sveriges dödbok 1830–2020[*][[Sveriges dödbok 1830–2020 (edition 8 of the Swedish death index)|]]|access-date= necesită |url= (ajutor)
CONOR[*][[CONOR (authority control file for author and corporate names in Slovene system COBISS)|]]Verificați valoarea |titlelink= (ajutor)