@book{17455,
	author = {Vargas Bautista, Davis Alexander and Pérez Bolívar, Jenny Marcela and   },
	title = {Aplicación Web Alegría Down /},
	publisher = {Corporación Unificada Nacional de Educación Superior,},
	year = {2018.},
	address = {Bogotá (Colombia) :},
	edition = {                   },
	url = {https://drive.google.com/open?id=1Dej_iCtGQqeWcqaHyQdNq7JePPVAMPxf}
}