# Berthold de Villiers
**Wikidata**: [Q106520391](https://www.wikidata.org/wiki/Q106520391)  
**Source**: https://4ort.xyz/entity/berthold-de-villiers


## References

1. IdRef
2. Catalog of the German National Library
3. NUKAT
4. CERL Thesaurus
5. MAK
6. Virtual International Authority File
7. [Source](http://thesaurus.cerl.org/record/cnp00468417)
8. [Source](http://thesaurus.cerl.org/record/cni00073595)
9. [Source](http://mak.bn.org.pl/cgi-bin/KHW/makwww.exe?BM=1&NU=1&IM=4&WI=9810562824905606)