@Misc{BVMC:814128, author = {Menéndez y Pelayo, Marcelino}, title = {Carta de Marcelino Menéndez Pelayo a Juan Valera. Santander, 23 julio 1891}, url = {https://www.cervantesvirtual.com/obra/carta-de-marcelino-menendez-pelayo-a-juan-valera-santander-23-julio-1891-814128} }