@Misc{BVMC:280257, author = {Ballesteros Beretta, Antonio}, title = {Itinerario de Alfonso X, rey de Castilla. [1252-1253] [1]}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2011}, year = {2011}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc9w109} }