@Misc{BVMC:278892, author = {Echeverría, Esteban}, title = {Carta de Esteban Echeverría a Juan Bautista Alberdi (23-6-1849)}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2010}, year = {2010}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmcqn6q1} }