@Book{BVMC:1133615,
author = {Alfonso X, Rey de Castilla},
title = {Alfonso X, el Sabio},
publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2021},
year = {2021},
url = {https://www.cervantesvirtual.com/obra/alfonso-x-el-sabio-1133615}
}