@Misc{BVMC:274004, author = {Cueva, Beltrán de la, Duque de Alburquerque}, title = {[Carta del Duque de Alburquerque al Rey, 4-06-1622].}, url = {https://www.cervantesvirtual.com/obra/carta-del-duque-de-alburquerque-al-rey-4-06-1622} }