@Book{BVMC:788876, author = {Sáenz Hayes, Ricardo}, title = {Carta de Ricardo Sáenz Hayes a Manuel Ugarte. Buenos Aires, 5 de junio de 1909}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2017}, year = {2017}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmcfv0n6} }