@book{139356,
	author = {Ramírez Caudillo, Leonardo,},
	title = {Geometría y trigonometría :},
	publisher = {Grupo Editorial Éxodo,},
	year = {2011.},
	address = {México D. F. :},
	note = {Incluye anexos.},
	url = {https://elibro.net/ereader/politecnicointernacional/130349}
}