# Stanisław Helsztyński
**Wikidata**: [Q7942047](https://www.wikidata.org/wiki/Q7942047)  
**Source**: https://4ort.xyz/entity/stanis-aw-helszty-ski


## References

1. BnF authorities
2. Integrated Authority File
3. general catalog of BnF
4. Virtual International Authority File
5. CiNii Research
6. Library of Congress Authorities
7. [BnF authorities](http://data.bnf.fr/ark:/12148/cb12063741x)
8. Sejm-Wielki.pl
9. Bibliography of the History of the Czech Lands