Ukjent
{{cite web |url=https://marcus.uib.no/instance/reference/3a3434d2c54710b0c8e1e417a21afbe63ea03790 |title=ubb-kk-n-401-012: Stephansen A/S gjenn... (s. Ukjent) |author=Avdeling for spesialsamlinger |accessdate=Thu Apr 25, 2024 |publisher=University of Bergen Library}}