@Book{BVMC:292721, author = {González Peñas, Carlos}, title = {Carta de Carlos González Peñas a Rafael Altamira. México, 29 de enero de 1910}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2012}, year = {2012}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc183w6} }