# Sybrand Allard Waller Zeper
**Wikidata**: [Q18093536](https://www.wikidata.org/wiki/Q18093536)  
**Source**: https://4ort.xyz/entity/sybrand-allard-waller-zeper


## References

1. Integrated Authority File
2. Virtual International Authority File
3. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
4. Biografisch Portaal