Identifiers
| WikiData URI | http://www.wikidata.org/entity/Q2481752 |
| Biografisch Portaal | http://www.biografischportaal.nl/persoon/73603185 |
| RKDartists | https://rkd.nl/explore/artists/71251 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.79743 |
| VIAF | http://viaf.org/viaf/30380926 |
| Adamlink URI | https://adamlink.nl/person/schrofer-willem/3833 |
