# Guido d'Arezzo

> author of Liber mitis (12th century)

**Wikidata**: [Q104129856](https://www.wikidata.org/wiki/Q104129856)  
**Source**: https://4ort.xyz/entity/guido-d-arezzo-q104129856


## References

1. Integrated Authority File
2. Virtual International Authority File
3. [Source](http://www.mlat.uzh.ch/MLS/overview_by_author.php?author=Maestro_Guido)