# Johan Josua Ketelaar
**Wikidata**: [Q109833243](https://www.wikidata.org/wiki/Q109833243)  
**Source**: https://4ort.xyz/entity/johan-josua-ketelaar


## References

1. Virtual International Authority File
2. Integrated Authority File
3. BnF authorities
4. Digital Library for Dutch Literature
5. Czech National Authority Database