@Misc{BVMC:266808,
author = {Real de Azúa, Carlos},
title = {Ambiente espiritual del 900},
publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2010},
year = {2010},
url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc3b6j2}
}