@book{43721,
	author = {Nieto Caballero, Agustín,},
	title = {Escuela activa :},
	publisher = {Gimnasio Moderno,},
	year = {[2014]},
	address = {Bogotá, D.C. :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/42750/}
}