@book{95353,
	author = {Pérez Galdós, Benito,},
	title = {La Incógnita},
	publisher = {Project Gutenberg,},
	year = {2017},
	address = {Salt Lake City, UT :},
	note = {Wikipedia page about this book: https://es.wikipedia.org/wiki/La_inc%C3%B3gnita},
	url = {https://www.gutenberg.org/ebooks/54521}
}