@book{18548,
	author = {Zambrano Gutiérrez, Angela and Marín Velásquez, Weimar Yesid},
	title = {Úroboros : },
	publisher = {Corporación Unificada Nacional de Educación Superior,},
	year = {2016.},
	address = {Bogotá (Colombia) :},
	url = {https://drive.google.com/open?id=1OnZWRELqp8BAbBmAdN6tJz--XoT8KdcW}
}