@Misc{BVMC:231465, author = {Valera, Juan}, title = {De la doctrina del progreso con relación a la doctrina cristiana [Audio]}, publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2006}, year = {2006}, url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmc3r169} }