@Misc{BVMC:249789, author = {Alas, Leopoldo}, title = {Libros y libracos (El Solfeo, 1876)}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2007}, year = {2007}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmcnp235} }