Identifiers
| WikiData URI | http://www.wikidata.org/entity/Q768520 |
| Biografisch Portaal | http://www.biografischportaal.nl/persoon/41029936 |
| Ecartico | http://www.vondel.humanities.uva.nl/ecartico/persons/8755 |
| RKDartists | https://rkd.nl/explore/artists/83665 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.33172 |
| VIAF | http://viaf.org/viaf/7658532 |
| Adamlink URI | https://adamlink.nl/person/werff-pieter-van-der/2974 |
