[this book](https://codigosostenible.com)
- this book [^anchor1]
- [^anchor1]:https://codigosostenible.com
[^anchor1]:https://codigosostenible.com
- this book [^anchor1] and some other text.
- [^anchor1]:https://codigosostenible.com
[this book](https://codigosostenible.com) and some other text [and another link](http://url.com)
- this book [^anchor1] and some other text and another link [^anchor2]
- [^anchor1]:https://codigosostenible.com
- [^anchor2]:https://url.com
[this book](https://codigosostenible.com) and some other text [same book](https://codigosostenible.com)
- this book [^anchor1] and some other text same book [^anchor1]
- [^anchor1]:https://codigosostenible.com