@book{239220,
	author = {Obarrio Moreno, Juan Alfredo,},
	title = {Expresión oral y proceso de aprendizaje :},
	publisher = {Dykinson, S.L.,},
	year = {2013.},
	address = {Madrid :},
	url = {https://www.digitaliapublishing.com/a/28579/}
}