# pyramid scheme

> type of unsustainable business model

**Wikidata**: [Q214242](https://www.wikidata.org/wiki/Q214242)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Pyramid_scheme)  
**Source**: https://4ort.xyz/entity/pyramid-scheme


## References

1. Nuovo soggettario
2. Integrated Authority File
3. BBC Things
4. BabelNet