@book{88212,
	author = {Peña Acuña, Beatriz,},
	title = {Métodos científicos de observación en educación /},
	publisher = {Visión Libros,},
	year = {[2011]},
	address = {Madrid, España :},
	url = {https://login.zproxy.cun.edu.co/login?url=https://www.digitaliapublishing.com/a/89282/}
}