@book{129465,
	author = {Copérnico, Nicolás. and e-libro, Corp.},
	title = {Revoluciones de las órbitas celestes},
	publisher = {Instituto Politécnico Nacional,},
	year = {1999.},
	address = {México, D.F. :},
	url = {https://elibro.net/ereader/politecnicointernacional/72675}
}