@Book{BVMC:638975, author = {Darío, Rubén}, title = {Cantos de vida y esperanza. Los cisnes y otros poemas}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2014}, year = {2014}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmcgq8p9} }