@book{90255,
	author = {Pérez de Ayala, Ramón,},
	title = {Las máscaras, vol. 1/2},
	publisher = {Project Gutenberg,},
	year = {2015},
	address = {Salt Lake City, UT :},
	note = {Release date is 2015-07-10},
	url = {https://www.gutenberg.org/ebooks/49417}
}