@Book{BVMC:292697, author = {Castillo y Parra}, title = {Carta de Castillo y Parra a Rafael Altamira. México, 21 de enero de 1910}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2012}, year = {2012}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc0c5j9} }