# Robert Sak

> Czech historian

**Wikidata**: [Q18114178](https://www.wikidata.org/wiki/Q18114178)  
**Source**: https://4ort.xyz/entity/robert-sak


## References

1. Czech National Authority Database
2. BnF authorities
3. [Records of persons of interest](http://svazky.cz/test/svazkyMT.php?jmeno=Robert&prijm=Sak&dnar=19.01.1933&hledej=Hledat)
4. The Fine Art Archive
5. general catalog of BnF
6. Virtual International Authority File
7. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
8. [Source](http://svazky.cz/test/svazkyMT.php?jmeno=Robert&prijm=Sak&dnar=19.01.1933&hledej=Hledat)
9. [WHO IS WHO in Czech Slavonic Studies](http://www.slaviste.cz/index.php?page=detail&id=465-sak-robert-doc)
10. CONOR.SI
11. Bibliography of the History of the Czech Lands