# Sikko Popta Haak

> Dutch historian (1876–1937)

**Wikidata**: [Q1417846](https://www.wikidata.org/wiki/Q1417846)  
**Source**: https://4ort.xyz/entity/sikko-popta-haak


## References

1. International Standard Name Identifier
2. Virtual International Authority File
3. BnF authorities