Identifiers
| WikiData URI | http://www.wikidata.org/entity/Q15876868 |
| Biografisch Portaal | http://www.biografischportaal.nl/persoon/07352287 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.27330 |
| Adamlink URI | https://adamlink.nl/person/clifford-jan/7816 |
