@Misc{BVMC:273969, author = {Cueva, Beltrán de la, Duque de Alburquerque}, title = {[Carta del Duque de Alburquerque al Rey, Roma 11-12-1621].}, url = {https://www.cervantesvirtual.com/obra/carta-del-duque-de-alburquerque-al-rey-roma-11-12-1621} }