@book{19224,
	author = {Ramirez Gonzalez, Leidy Tatiana  and Valencia Urrego, Franci Liliana },
	title = {Green CFT / },
	publisher = {Corporación Unificada Nacional de Educación Superior,},
	year = {2020.},
	address = {Bogotá (Colombia) :},
	url = {https://drive.google.com/file/d/16gfPP60e11dAKB7OEiwhBAMkfyV7MD01/view?usp=sharing}
}