@Book{BVMC:783049, author = {Castillo y Parra}, title = {Carta de Castillo y Parra a Rafael Altamira. México, 20 de marzo de 1910}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2017}, year = {2017}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc0783049} }