Identifiers
| WikiData URI | http://www.wikidata.org/entity/Q2867242 |
| RKDartists | https://rkd.nl/explore/artists/422208 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.72320 |
| Adamlink URI | https://adamlink.nl/person/hullekes-sjaak/4615 |
| WikiData URI | http://www.wikidata.org/entity/Q2867242 |
| RKDartists | https://rkd.nl/explore/artists/422208 |
| Amsterdam Museum | http://hdl.handle.net/11259/people.72320 |
| Adamlink URI | https://adamlink.nl/person/hullekes-sjaak/4615 |