Identifiers
| WikiData URI | http://www.wikidata.org/entity/Q1372280 |
| Biografisch Portaal | http://www.biografischportaal.nl/persoon/55797855 |
| RKDartists | https://rkd.nl/explore/artists/67624 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.23771 |
| VIAF | http://viaf.org/viaf/72148979 |
| Adamlink URI | https://adamlink.nl/person/roelofs-willem/3925 |
