@Misc{BVMC:220953, author = {Valera, Juan}, title = {Azul ... A don Rubén Darío. Carta I (22 de octubre de 1888)}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2003}, year = {2003}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmcxs5n7} }