@book{17427,
	author = {Gutierrez Gomez, Francisco David and Torres Pinchao, Asdric Nataly and   },
	title = {Back Daf /},
	publisher = {Corporación Unificada Nacional de Educación Superior,},
	year = {2019.},
	address = {Bogotá (Colombia) :},
	edition = {                   },
	url = {https://drive.google.com/open?id=1LhNl9-mQ--lWCtFv0vyw5ETjqPS9pMsg}
}