@Book{BVMC:1134230,
author = {Alfonso X, Rey de Castilla},
author = {Sancho IV, Rey de Castilla},
author = {Fernando III, Rey de Castilla, Santo},
title = {Crónica de tres reyes},
publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2021},
year = {2021},
url = {https://www.cervantesvirtual.com/obra/cronica-de-tres-reyes-1134230}
}