@book{53293,
	author = {Varela Rodríguez, Roger and Cáceres Martínez, Luis Alfredo },
	title = {Los principios de la salud  [Formato electrónico]},
	publisher = {Los autores,},
	year = {2006},
	address = {Colombia :},
	url = {https://drive.google.com/file/d/1sGd8odOOCQYsHQ6UIiD0pz6BzhYRgERs/view?usp=sharing}
}