@Misc{BVMC:280258, author = {Ballesteros Beretta, Antonio}, title = {Itinerario de Alfonso X, rey de Castilla. [1253-1255] [2]}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2011}, year = {2011}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc64086} }