# Richard Sperl
**Wikidata**: [Q95261137](https://www.wikidata.org/wiki/Q95261137)  
**Source**: https://4ort.xyz/entity/richard-sperl


## References

1. Czech National Authority Database
2. BnF authorities
3. Catalog of the German National Library
4. Faceted Application of Subject Terminology
5. Virtual International Authority File
6. CiNii Research
7. National Library of Israel Names and Subjects Authority File