@Misc{BVMC:672414,
author = {Marías, Julián},
title = {Idea de la metafísica},
publisher = {Alicante : Biblioteca Virtual Miguel de Cervantes, 2014},
year = {2014},
url = {https://www.cervantesvirtual.com/nd/ark:/59851/bmcg17t9}
}