# Guilelmus van Gulik
**Wikidata**: [Q97063530](https://www.wikidata.org/wiki/Q97063530)  
**Source**: https://4ort.xyz/entity/guilelmus-van-gulik


## References

1. IdRef
2. Catalog of the German National Library
3. VcBA (identifier)
4. [Source](https://pust.urbe.it/cgi-bin/koha/opac-authoritiesdetail.pl?marc=1&authid=3025)
5. CONOR.SI
6. Catalogue of the Unione Romana Biblioteche Scientifiche
7. Bibliography of the History of the Czech Lands
8. Trove