@Misc{BVMC:220959, author = {Valera, Juan}, title = {Al Excelentísimo Señor Don Antonio Cánovas del Castillo}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2003}, year = {2003}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc599z8} }