@Book{BVMC:224292, author = {Alfonso X, Rey de Castilla}, title = {[Privilegi del Rei Alfons de Castella als mercaders catalans de Sevilla]}, publisher = {Alacant : Biblioteca Virtual Miguel de Cervantes, 2006}, year = {2006}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmcqb9z2} }