# Stiftung Warentest

> product testing organization

**Wikidata**: [Q509708](https://www.wikidata.org/wiki/Q509708)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Stiftung_Warentest)  
**Source**: https://4ort.xyz/entity/stiftung-warentest


## References

1. 20th Century Press Archives
2. [Source](http://www.international-testing.org/members.html)
3. Freebase Data Dumps. 2013
4. Virtual International Authority File
5. [Source](https://www.test.de/)
6. GRID Release 2019-10-06
7. Aligned ISNI and Ringgold identifiers for institutions
8. Via P227 lookup with GND value from PM20 folder. 20th Century Press Archives
9. [archINFORM](https://www.archinform.net/service/wd_aiarch.php)
10. YouTube API
11. Source