Identifiers
| WikiData URI | http://www.wikidata.org/entity/Q152793 |
| Biografisch Portaal | http://www.biografischportaal.nl/persoon/37017239 |
| RKDartists | https://rkd.nl/explore/artists/2208 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.22768 |
| VIAF | http://viaf.org/viaf/95871832 |
| Adamlink URI | https://adamlink.nl/person/appel-karel/75 |
