@Misc{BVMC:229348, author = {Juan II, Rey de Portugal}, title = {Carta del rey Juan de Portugal a Cristóbal Colón (20 de marzo de 1488)}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2006}, year = {2006}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmcsx677} }