Identifiers
| WikiData URI | http://www.wikidata.org/entity/Q3153936 |
| Biografisch Portaal | http://www.biografischportaal.nl/persoon/40025923 |
| RKDartists | https://rkd.nl/explore/artists/88767 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.9802 |
| VIAF | http://viaf.org/viaf/13113381 |
| PPN | http://data.bibliotheken.nl/id/thes/p074741268 |
| Adamlink URI | https://adamlink.nl/person/kromhout-willem/9016 |
