@Book{BVMC:947656, author = {Canella y Secades, Fermín}, title = {Carta de Fermín Canella a Rafael Altamira. Oviedo, 4 de enero de 1909}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2019}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc0947656} }