# Standard Mandarin tones
**Wikidata**: [Q121573435](https://www.wikidata.org/wiki/Q121573435)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Standard_Chinese_tones)  
**Source**: https://4ort.xyz/entity/standard-mandarin-tones


## References

1. [Source](https://kotobank.jp/word/%E5%9B%9B%E5%A3%B0-73515)
2. [Source](https://ctext.org/pinyin.pl?from=wadegiles&to=pinyin&if=en&text=ma1+ma2+ma3+ma4)
3. National Library of Israel Names and Subjects Authority File